•2ATï00í REPORT l)\H — No. 2013 LIST OF UNRESTRICTED NIM PUBLICATIONS ISSUED FROM 1966 TO 1979 by H.W. Glen NATIONAL INSTITUTE for METALLURGY 200 Har*Strijdom Road RANDBURG South Africa 30th June, 1979 ^y NATIONAL INSTITUTE FOR METALLURGY LIAISON AND INFORMATION DIVISION REPORT No. 2013 LIST OF UNRESTRICTED NIM PUBLICATIONS ISSUED FROM 1966 TO 1979 Investigator H.W. Glen Head of Division L.F. Haughton 30th June, 1979 All correspondence to the National Institute for Metallurgy, Private Bag X3015, Randburg, 2125 South Africa. ISBN 0 86999 473 5 PREFACE This report, which supersedes Report 1970, is a compilation of all the publications of the National Institute for Metallurgy (NIM) having an unrestricted dbtribution list. It includes all the unrestricted reports and the patents issued and registered by NIM from 1966 to 1 st April, 1979, the confidential reports that were declassified during that period, all the papers published during that period where one of the authors was, or is, a member of NIM staff, and the other technical publications that do not fall into the categories already mentioned. The total number of unrestricted reports included is 714, the patents amount to 19, the number of papers published is 294, and the other technical publications amount to 5. NIM's research work is divided into research programmes, and, for ease of reference, all the reports, papers, patents, and other technical publications listed here have been classified as far as possible into the various NIM research programmes. A list of these research programmes is given in Section 1, together with the numbers of the pages on which the publications are classified according to programme. This report also gives details of the 2 periodicals issued by NIM and concludes with a list of NIM miscellaneous publications, which are additional to those mentioned above. These include the current annual report, together with brochures and leaflets of various kinds. SYNOPSIS This publication lists the 714 unrestricted reports. 294 papers, 19 patents, and 5 other technical publications that were issued as publications of the National Institute for Metallurgy from 1966 (the year of its inception) to 1st April, 1979. For ease of reference, these publications are also classified under the research programmes that gave rise to them. Also included are details of the 2 periodicals issued by NIM and a list of the current miscellaneous publications of the Institute, which include the annual report, and brochures and leaflets of various kinds. SAMEVATTING Hierdie publikasie lys die 714 onbeperkte verslae, 294 referate. 19 patente en 5 ander tegniese punlikasies wat sedert 1966 (die stigtingsjaar van NIM) tot 1 April 1979 as publikasies van die Nasionale Instituut vir Metallurgie uitgegee is. Hierdie publikasies word vir maklike verwysing ook onder die navorsingsprogramme wat tot hulle aanleiding gegee het, geklassifiseer. Daar word ook besonderhede verstrek van die 2 blaaie wat NIM uitgee en n lys van diverse publikasies van die Instituut soos die jaarverslag en verskillende soorte brosjures en pamflette. ingesluit. CONTENTS PREFACE 1. COMPREHENSIVE LIST OF RESEARCH PROGRAMMES 1 A. NIM Programmes 2 B. Programmes on Uranium Involving NIM Staff 5 2. LIST OF UNRESTRICTED REPORTS 7 3. PAPERS BY NIM STAFF 40 4. NIM PATENTS 60 5. OTHER TECHNICAL PUBLICATIONS 62 6. CLASSIFICATION OF PUBLICATIONS ACCORDING TO PROGRAMME 63 7. PERIODICAL PUBLICATIONS 132 8. MISCELLANEOUS PUBLICATIONS 133 NIM PUBLICATIONS 1. COMPREHENSIVE UST OF RESEARCH PROGRAMMES The page numbers on which the pubNcations are arranged according to programme are given on the right-hand side of the following list. Where no page number is given for a programme, it means that no publications have been issued under that programme. i NIM PUBLICATIONS A. NIM PROGRAMMES No. of programme \o. of page Ferro-alloys, stainless steels, iron and steel, and related fields 001 Fundamental metallurgical studies of ferro-alloy processes and the application of results to operating plants W 002 Development cf new and improved ferro-alloy processes for the major ferro-alloys (ferTochromium, ferromanganese. ferrosilicon) ft 7 003 Instrumentation, optimization, and control of ferro-alloy processes ft8 004 Research and development of stainless-steel processes 68 005 Research associated with conventional processes for the production of iron and steel ft9 006 Research and development of processes for minor ferro-alloys 69 007 Direct reduction processes for iron ores 008 Properties of carbonaceous reducing agents with special reference to ferro-alloy processes 69 009 Development of processes for the production of chromium metal and chemicals 010 Development of processes for the production of manganese metal 7(1 011 Development of processes for the production of silicon metal Base metals (copper, nickel, zinc, lead, cobalt, cadmium) 050 Developmem of processes for the concentration of base metals, especially copper, zinc. lead, and nickel, by ore-dressing techniques with special reference to mixed sulphides 70 051 Development of hydrometallurgicai processes for base metals, especially copper. nickel, and cobalt, including non-sulphidic raw materials 71 052 Pyrometallurgical processes for the production and refining of lead and zinc 053 Pyrometallurgical processes for the smelting and refining of copper and nickel 74 054 Instrumentation, optimization, and control of processes for the recovery of base metals 055 Development of hydrometallurgical processes for the recovery of zinc 75 05ft Processing of nickel-bearing serpentines with special reference to their occurrence in South Africa 75 057 Development of new and improved methods for the analysis of base-metal sulphide ores, concentrates, metals, and byproducts 77 058 Mineralogical studies of base-metal sulphides from the north-western (ape .... 78 NIM PUBLICATIONS No. of programme No. of page Gold and sHver 100 Development of improved ore-dressing processes for the recovery of gold and pyrile from Witwatersrand and O.F.S. gold mines 79 101 Development of improved hydrometaliurgical extraction processes for gold from Witwatersrand and O.F.S. gold mines 79 102 Instrumentation, optimization, and control of processes for the recovery of gold 82 103 Mineralogical and geochemical studies of gold ores 82 104 Recovery of gold from refractory ores 83 105 Refining processes for gold and silver 84 Platinum-group metals and other associated metals 150 Research and development of new processes for the refining of platinum-group metals 84 151 Research and development of new processes for the treatment of anode sludges from copper refineries 85 152 Research and development of improved ore-dressing and smelting processes for the recovery of platinum-group metals and chromite from ores, including ores of the Merensky and Chromite Reefs 85 153 Development of new and improved methods for the analysis of platinum-group metals and gold in ores, concentrates, mattes, and pure metals 86 154 Mineralogical studies of platinum-group metals and chromite-containing reefs in the Bushveld Complex 89 Base minerals 200 Development of improved processes for the recovery of phosphates and phosphorus chemicals 90 201 Development of improved processes for the recovery of fluorspar 91 202 Investigation of processes for the production of alumina and aluminium from local raw materials 92 203 Investigation of processes for the production of aluminous refractories, with special reference to sillimanite and andalusite 92 204 Processes for the production of magnetite and magnesium oxide 93 205 Processes for the production of limestone and lime 206 Processes for the production of sodium chemicals (e.g., salt, soda ash) 93 .1 N1M PUBLICATIONS No. of programme No. of page 207 Processes for the production of potassium chemicals 9^ 208 Recovery and processing of asbestos Miscellaneous minerals and metals 250 Processing of pegmatites for the recovery of niobium, tantalum, spodumene, mica, beryl, etc 93 251 Recovery of ilmenite, rutile, zircon, and other minerals from beach-sand and similar deposits 94 252 Recovery of tungsten concentrates from ores, and the development of processes for the refining of tungsten 95 253 Processes for the upgrading of manganese ores and for the production of manganese oxide and manganese chemicals 95 254 Production and refining of magnesium metal and magnesium-metal alloys 255 Research and development for the production and use of zirconium and its alloys in non-nuclear fields 96 256 Recovery of iron, titanium dioxide, and vanadium from iron ores containing titanium and vanadium 96 257 Production and refining of titanium metal and its alloys 258 Recovery of tin concentrates from ores, and refining of tin 97 259 Processes for the production and refining of niobium and tantalum metal and their alloys 9« 260 Recovery and refining of the rare-earth minerals and metals 261 Recovery and refining of antimony 1<>2 Development of new and improved methods f;ir the analysis of silicate-containing ores and concentrates 98 Research and development of equipment, processes, reagents, and research techniques 500 General physicochemical study of flotation and flocculation, and the development of reagents for these processes 101 50i General physicochemital study of hydrometallurgy 104 502 Research and development of equipment for ore-dressing processes, and new concepts in ore-dressing (excluding flotation and comminution) 107 503 Fundamental investigations of the simulation, optimization, and control of extractive-metallurgical processes and computation techniques 108 504 Research and development of analytical techniques and methods for extractive metallurgy 108 4 NIM PUBLICATIONS No. of programme No. of page 505 Preparation of international and secondary reference materials for extractive metallurgy "0 506 Development of mineralogical techniques and methods for extractive metallurgy 111 507 Development of nuciear-activation techniques as methods for the analysis of minerals and metals '' - 508 Research and development of equipment for hydrometallurgical and electrometallurgical processes ' 15 509 Research and development of equipment for pyrometallurgical processes I If» 510 Research and development of instruments and associated equipment for the measurement and control of extractive-metallurgical processes ' «6 511 General studies of electrochemistry in extractive metallurgy 118 512 Engineering studio of the flotation process and equipment, including modelling, scale-up. optimization, and control ' I ^ 5H Development of solvent-extraction, ion-exchange, and other reagents for hydrometallurgy ' ~' 514 General chemical studies of high-temperature processes in extractive metallurgy 121 515 Engineering studies of comminution and of associated classification processes and equipment, including modelling, scale-up, optimization, and control 122 Processing and properties of metals 600 Selection of materials and optimization for extractive-metallurgical processes ... 123 601 Further processing of metals with special reference to end-usage and properties that are particularly suited to local raw materials Miscellaneous 940 Miscellaneous economic, cost, and commodity studies 123 960 Minerals manpower, training, and recruitment 124 998 Visits (local and overseas) and attendance at conferences, symposia, etc. 999 Miscellaneous unallocatable projects 124 B. PROGRAMMES ON URANIUM INVOLVING NIM STAFF The work done by the Extraction Metallurgy Division of the Atomic Energy Board with the assistance of NIM staff is classified under the following headings: •i MM PUBLICATIONS Programme M>. of page Beneficiation of ores for the recovery of uranium 12f> Fundamental studies on the leaching of uranium ores 1-7 Instrumentation for uranium plants 128 Methods for the determination of baddeleyite. zirconium compounds, and nuclear-grade zirconium metals 128 Methods for the determination of trace impurities in uranium compounds 129 Methods for the determination of uranium and thorium 130 Mineralogy .al studies of uranium minerals 130 Processes for the recovery of uranium 131 h NIM PUBLICATIONS 2. LIST OF UNRESTRICTED REPORTS Copies of most of these reports are available free of charge from the National Institute for Metallurgy, Private Bag X3015, Randburg, 2125 South Africa. For those reports that are out of print, photocopies can be supplied at a nominal charge. The reports that have become available since the previous issue of this list (Report 1970) are marked •. 7 NIM PUBLICATIONS No. Title Year 2 The dissolution of gold in cyanide solutions containing copper in a carbonate/bicarbonate medium. Preliminary results 1%6 5 The spectrophotometry determination of trace amounts of tin ! 966 8 Mineralogy and chemical behaviour of some refractory gold ores from the Barberton Mountain Land 1966 10 The determination of phosphate in silicate samples 1966 11 Gravimetric determination of carbon dioxiOe iii cyanide solutions 1966 12 Exploratory tests on the concentration of tin ore from Kuils River. C.P. 1966 14 A comparison of the effects of additions of carbor.ate/bicarbonate as opposed to additions of lime in the leaching of a Blyvooruitzicht gold ore 1966 16 The rotating-disc system and its applications in the dissolution of gold 1966 18 The 8th Commonwealth Mining and Metallurgical Congress — Australasia — 27th February to 15th April, 1965. Visits to various places in Australia and Tasmania 1966 20 The determination of small amounts of gold in barren cyanide solution by atomic-absorption spectrophotometry 1966 21 The use of heavy-medium separation for the recovery of spodumene 1966 24 Determination of gold in barren cyanide solutions by atomic-absorption spectrophotometry 1966 25 Quantitative mincralogical examination of six samples of pulverized mine ores submitted by the Chemical Engineering Group, CS1 R 1966 26 Economic evaluations of the possible producion of alumina from Sasol ashes by the ammonium sulphate baking process and the ammonium fluoride and sulphuric acid leaching process 1967 27 Speetrophotometric determination of gold in cyanide solutions after solvent extraction as the bromo-aurate complex 1966 28 Exploratory tests on the dissolution of manganese dioxide by reaction with sulphuric acid and a metallic sulphide 1966 29 The determination of selenium and tellurium in silver chloride 1966 30 The extraction of alumina from Sasol coal ash 1966 34 Qualitative electron-microprobe investigation of cobalt-gadolinium intermetallic compounds 1966 35 The determination of gold ores and solutions by neutron-activation analysis 1966 37 The determination of aluminium in silicate samples by complexometric titration 1966 38 Chemical treatment of refractory gold ores. Literature survey 1966 NIM PUBLICATIONS No. Title Year 39 The determination of small amounts of silica in zirconium ores and concentrates 1966 40 The spectrophotometry determination of tin in silicate materials 1966 41 Table of the isomeric states of stable nuclides 1966 42 The redox potential of solutions of potassium ethyl xanthate 1966 43 The effect of oxygen on the stability of solutions of potassium ethyl xanthate 1966 44 The zero point of charge of uranium dioxide and uraninite 1966 45 An apparatus used in the study of interactions between sulphide minerals, sulphydryl reagents and oxygen 1966 48 The investigation of a suspected siilimanite-bearing sample 1966 49 The spectrophotometric determination of silica in zirconium oxide 1966 51 Exploratory tests on the recovery of diaspore from a ferruginous shale from the Gamagararand 1966 53 Differential thermal investigation of Moore-filter residues for the Anglo American Research Laboratory 1966 54 Electron-microprobe investigation of magnetite from the Bushveld Igneous Complex 1966 63 X-ray and spectrographic analyses of seven samples of manganese ore 1966 64 The determination of the hafnium/zirconium ratio in ammonium diuranate produced by the Bufflex Process 1966 65 Samples of manganese dioxide for battery tests by the CSI R 1966 66 The study of propagation modes effective in around-the-World radio-wave propagation in the 15-Mc/s to 30-Mc/s band 1966 67 The application of silicon controlled rectifiers to instruments using half-cycle heating 1966 69 Preliminary examination of ijolite from Spilzkop 1966 76 The electron-microprobe investigation of a gold concentrate from the Louis Moore Mine 1966 77 Concentration of fluorspar from the farm Strydfontein. Marieo District. Preliminary investigation 1966 78 X-ray investigation of four samples of manganese ore 1966 79 Investigation into the improvement of gold recovery in the cyanidation circuit of the Louis Moore gold mine 1966 8" The resolution of photopeaks obtained from the products of stable nuclides irradiated by neutrons 1966 81 The solvent extraction of copper cyanide 1966 NIM PUBLICATIONS ,VÍ>. Title Year 82 The spectrophotometric determination of cobalt with 2-nitroso-l-naphthol 1966 83 Qualitative X-ray examination of two samples of MnO. ore 1966 84 Leaching tests on the copper sulphide mineral valleriitc from Palabora Mining Company — a preliminary report ll>66 85 The roasting of refractory gold ores ar.J concentrates. Literature survey 1966 86 The investigation of six samples of serpentine from the Barberton area 1966 88 Ouantitative electron-microprobe investigation of the distribution of nickel in serpentinites and associated minerals and rocks from the Barberton area 1966 89 Mineraiogical examination of ijolite from Spit/kop 1966 91) Mineraiogical examination of schist sample from the Giant Reefs Mine 1966 91 Half-cycle heating applied to an \-ray powder camera 1966 96 The mode of occurrence of beryl in grey gneiss along !he contact with the Gesic pegmatite 1 gtl'> 97 X-ray diffraction analysis of six samples of manganese ore from Graskop. eastern Transvaal . IW6 W Qualitative X-ray analysis of manganese dioxiJe ore from Graskop 1966 99 Determination of mo!) i denum in uranium compounds 1966 I ••! Llcciron-microprobc identification of opaque minerals in gold ore from the Basal Reef. Free State Geduld Mine l^fib 102 Micas of the Noumas pegmatite 1^66 103 Techniques for the examination of inorganic compounds on an infrared spectrograph 1966 104 The infrared examination of microlite. mjscovite. apatite in the presence of carbonate, asbestos, paragonite. and various uranium salts 1967 105 Report on overseas visit 1966 107 Investigations on the treatment of refnetory gold ores from the Giant Reefs Mine 1966 108 An X-ray-diffraction method for the quantitative determination of nsutite (y-MnO ) and cryptomelane ( 109 The possibility of establishing a local cost index for the estimation of metallurgical and chemical plant 1967 111 The X-ray investigation of a sample of upgraded material from the Graskop wad deposit 1966 I 13 The identification, by means of the electron microprotie. of an opaque mineral from the Artonvilla Mine. Messina 1966 in NIM PUBLICATIONS No. Title Year 120 Exploratory tests on the recovery of apatite and magnetite from the farm Schiel 1967 I 27 Comments on the size of gold particles observed in polished sections of ore from the Giant Reefs Mine 1967 128 Exploratory concentration test for the recovery of cassiterite from Sandspruit No. 51. Bronkhorstspruit district 1967 129 The polarographic determination of total hexavalent uranium as urai.yl fluoride in uranous fluoride 1967 131 The spectrographs determination of titanium oxide, ferric oxide, and silica, in baddeleyite 1967 132 Mineralogical and spectrographie investigation of a mineral concentrate from Koster. western Transvaal 1 967 133 Gold recovery by cyanidation from mill products obtained after pyrite flotation. Progress made up to 1st July. 1967 1967 136 Determination of aluminium in silicate materia!:, by solvent extraction and atomic-absorption spectrophotometry 1967 137 Determination of aluminium by atomic-absorption spectrophotometry with the nitrous oxide and acetylene flame 1966 138 The determination of beryllium by atomic-absorption spectrophotometry 1967 139 A preliminary survey of gold-recovery problems arising in the production of pyrite 1967 140 A preliminary mineralogical investigation of pyrite from the Kimberley and the Main Reefs, Vogelstruisbult Gold Mine 1967 142 Micas from the Namaqualand pegmatite area 1967 143 A review of the investigations into the possibility of producing alumina and aluminium from South African ores 1967 148 The recovery of gold from the Fairview dump after pretreatment with sulphurous acid 1967 149 The extraction of alumina, potash, and soda from a nepheline concentrate 1967 151 The spe.trophotometric determination of minor amounts of antimony 1967 152 The determination of beryllium by irradiation with gamma rays 1967 153 The spectrographs determination of zirconium in uranium oxide 1967 154 The leaching of various copper minerals with dilute sodium cyanide and dilute- solutions containing sulphuric acid and ferric ions 196? 155 The quantitative estimation of valleriite in the presence of other copper minerals 1967 156 Preliminary observations on thr automation of the TBP method for determining ura.uum 1967 II N1M PUBLICATIONS So. Title Year 157 Re ults of tests to obtain pure valleriite 1967 158 Aerosol formation with a high-speed spinning surface 1 967 159 A radioactive-tracer technique for the study of flotation of valleriite 1967 160 The determination of copper in rocks and ores by atomic-absorption spectrophotometry ' ^? 16! The quantitative electron-microprobe determination of magnesium content of magnetite from Phalaborwa 1967 162 The growth of radioactivity in uranium after separation from its daughter products 1967 163 The fluorimetric determination of uranium 1967 165 Gold recovery from pyrite flotation mill products by cyanidation. Progress made up to 1st May. 1967 1967 167 The determination of thiocyanate in uranium solutions 1967 172 The solvent extraction of copper cyanide 1967 173 The determination of beryllium by atomic-absorption spectrophotometry 1967 174 Determination of chloride in uranium solutions 1967 175 Copper extraction by leaching magnetites from Palabora Mining Company 1967 177 Compensating for flux variation in neutron-activation analysis 1967 179 The nickel distribution in weathered serpentinites from Volspruit. Potgietersrus 1967 180 The distribution of nickel in a rock sample from Louis Moore Mine, northern Transvaal 1967 190 Micas from the Namaqualand pegmatite area 1967 193 An investigation into the use of platinum ware for silicate analysis 1967 200 The spectrochcmical analysis of silicate material by a plasma-jet source 1967 207 The analysis of baddeleyite by X-ray-fluorescence spectroscopy 1967 208 Determination of fluorine in fluorspar ores by neutron-activation analysis 1967 211 Refractory gold ores. Report on investigations into roasting of gold concentrates in the Fdwards roaster of the Fairview and the New Consort reduction plants 1967 216 The determination of minor quantities of manganese in silicate materials 1967 218 exploratory comminution and flotation tests to indicate some characteristics of valleriite 1967 219 A review of some of the mineralogical factors influencing the flotation of pyrite 1967 NIM PUBLICATIONS No. Title Year 2""ï Test to recover tantalite-columbite from a bulk sample of tailing from the Noumas pegmatite by pneumatic tabng 1967 232 A comparison of open-circuit and closed-circuit grinding for the control of slime formation 1967 233 A chemical and mineralogical study of microlite from the Noumas pegmatite [available only on loan from NIM library] 1967 236 The determination of some of the major constituents of ores and minerals by fast-neutron activation analysis 1967 237 The mineralogy of uranium in Western Areas ores 1967 241 Investigation of the effects of sulphydryl flotation reagents on the cyanidation of native gold 1967 244 The determination of selenium and tellurium in silver chloride and uranium compounds 1967 256 The determination of carbon in uranium tetrafluoride 1967 257 The determination of uranium by the TBP method 1967 258 Exploratory concentration tests by Warren Spring Laboratory on the use of the fluidized-bed concentrator for the recovery of spodumene 1967 260 The electron-microprobe investigation of two samples of magnetite catalyst from Sasol 1967 262 Preliminary gravity concentration tests for the recovery of scheelite. wolframite, and cassiterite from the tailing dump at Boksputs in the Gordonia district 1967 264 A new detector unit for the Techtron model AA3 atomic-absorption spectrophotometer 1967 265 The spectrophotometry determination of minor quantities of chromium in silicate materials 1967 266 Concentration tests for the recovery of lepidolite from tailing dumps at Helicon and Rubicon Mines by electrostatic separation and flotation 1968 268 A power-failure safety device and operational aid for the electron microprobe 1968 269 A literature survey of the vertical distribution of gold and uranium in various duriferous reefs 1968 272 The determination of iron, titanium, and zirconium, in baddelcyite by X-ray-fluorescence spectroscopy 1968 276 The determination of vanadium in silicate materials by atomic-absorption spectrophotometry 1968 277 The determination of small quantities of xanthatc in cyanide solution 1968 u NIM PUBLICATIONS No. Title Year 278 Gold recovery by cyanidation from mill products obtained after pyrite flotation '968 281 The determination of xanthate in cyanide solutions '^68 286 A mineralogical and petrographic study of the pre-Transvaal rocks in borehole K.I. Koster district, western Transvaal 1968 287 A preliminary examination of kieselguhr from Witdraai. south of Postmasburg 1968 288 Ramsdellite (MnO.) from the Hotazcl Mine, northern Cape Province 1968 289 The determination of lead in silicate materials by atomic-absorption spectrophotometry 1968 291 Nickel minerals from Barberton. South Africa. I. Ferroan trevorite 1968 298 The recovery of potassium from phlogopite 1968 300 The mixed-collector system xanthate plus quaternary ammon-um halide. A literature survey 1968 302 Mineralogical examination of phosphate in pyroxenite from St. Agnesfontein. north-western Transvaal 1968 306 The effect of preaeration on two samples of thickener underflow from the Venterspost Gold Mine 1968 307 Preliminary examination of kyanite-bearing material from Granville, l.eydsdorp 1968 308 A mineralogical study of gold particles in pulp residues from the Bracken Gold Mine 1968 312 An investigation of the influence of alkyl trimethyl ammonium halides on the stability of potassium ethyl xanthate in aqueous solution 1968 313 The qualitative investigation of inclusions in free-cutting steel with the electron microprobe 1968 316 The flotation of pyrite from siliceous ganguc by cationic collectors. A literature survey 1968 317 Results of tests carried out at the Loraine Gold Mine during the period 5th to 7th February, 1968 1968 321 Aeration of ore from the Loraine Gold Mine before the addition of cyanide 1968 323 The colorimetric determination of cyanide in solutions from gold cyanidation plants 1968 325 Investigation for nickel and precious metals in samples from Malelane 1968 327 Information theory and the design of experiments 1968 328 A mincralogical examination of iron ore from Nooitgedacht. near Airlie Station. eastern Transvaal 1968 331 A literature survey of the preparation of standard rock samples 1968 M NIM PUBLICATIONS So. Title Year 332 Collection and preparation of standard rock samples 1968 333 The hot-water leaching process for refining arsenious oxide in flue dusts from the Fairview Mine 1968 340 The detection of the formation of a bulk adduct between potassium ethyl xanthate and dodecyl trimethyl ammonium bromide in aqueous solution 1968 341 An experimental on-stream colorimetric uranium monitor and solvcnt-additio.i controller for the Purlex Process 196N 343 A mineralogical investigation of gold-bearing sulphidic ore from the Florence-Devonian Mine. Barberton 196K 344 Nickel minerals from Barberton: II. Nimite. a nickelian chlorite I **68 347 Concentration tests on 'rich blue nobby' kyanite-bearing ore from Nkandhla. Zululand 1968 348 The determination of gold and silver in pyrite and banket by atomic-absorption spectrophotometry I 968 349 The separation of platinum from solution after fusion with potassium bitluoride 1968 350 Concentration of cassiterite from two samples from Enkeldoorn. Bronkhorstspruit district. I 968 352 Nickel minerals from Barberton: III. Willemseite. a nickelian talc 1968 354 The determination of trace amounts of arsenic in uranium tetrafluoride 1968 358 The determination of mercury at concentrations «if parts per thousand million in geological samples 1968 359 The separation and determination of calcium and magnesium in silicate material 1968 360 The determination of the alkali metal carbonates and hydroxides or carbonates and bicarbonates in the presence of permanganate ions 1968 361 The spectrophotometric determination of small amounts of calcium and magnesium in glass sands and allied materials 1968 362 The determination of cobalt in geological samples by atomic-absorption spectrophotometry 1968 363 The determination of thorium in solid samples of baddeleyite and earnonatite ores and in the solutions resulting from leaching these ores 1968 367 Felix Project: imperfect mixing in continuous le.'thing at Buffelsfontein uranium plant 1968 371 A preliminary investigation of cyanide-sulphydryl mixed-ligand complexes of mercuric ion I96H 377 Examination of pulp samples, treated with cyanide, for coated gold 1968 is N1M PUBLICATIONS No. Tiile Year 378 A literature survey on the manufacture of ferrochrome 1968 379 The inhibition of the rate of cyanidation of native gold by Aeromine 3037 1968 380 Preparation of gold ore before cyanidation 1968 385 The determination of the nature of coatings on gold particles 1968 392 The spectrophotometric determination of small amounts of calcium and magnesium in glass sand* and allied materials 1968 414 The geochemistry of some uranium minerals in the Dominion Reef and Witwatersrand Systems 1968 415 Uranium compounds in the Dominion Reefs, and their association with phosphorus compounds 1968 416 Comminution kinetics: batch tests in small mills, and model (*"• ilopment 1968 417 Determination of molybdenum in uranium compounds 1968 428 Nickel minerals from Barberton. South Africa: IV. Ri.esite, a member of the hydrotaicite group 1968 429 The determination of chromium in chromite 1968 430 A mineralogical investigation of pyrite from the Loraine Gold Mine. Orange Kree State 1968 433 The spectrophotometric determination of microgram quantities of vanadium in U,OH. UO,, andUF, 1968 434 The determination of titanium in uranium compounds 1968 435 The liquid-liquid extraction of ferric thiocyanate complexes with Vcrsatic 911 1968 437 The bathochn,mic shift of 381 nm absorption peak in aqueous solutions of potassium ethyl xanthate containing dodecyltrimethyl ammonium bromide 1968 439 The determination of free acid in the presence of hydrolysable cations 1968 440 Separation of hafnium and zirconium oxides from uranium preliminary to the spectrographs determination of hafnium 1968 442 n Ondersoek na die gebruik van die Hallimondbuis vir die kwantitatiewe bestudering van flottasieverskynsels met besonderc verwysing na die kondisionering van apatict en kalsiet 1968 443 The determination of anionic surface-active agents in dilute aqueous solution 1968 445 The use of califomium-252 fission neutron sources 1969 447 Chemical beneficiation and agglomeration of low-grade chromitc ores — a literature studv 1969 ift NIM PUBLICATIONS So. Title Year 449 The determination of cationic surface-active agents in dilute aqueous solution 1968 450 The spectrographs determination of alkali metals and alkaline earths in uranium oxide * I96K 451 The determination of thorium in baddeleyite and carbonatite ores and in the solutions resulting from leaching of these ores IWiX 452 The Purlex Process — a description of the pilot plant leading to the use of the process in South Africa 1^69 455 Determination of uranium by the TBP method after extraction with ethyl acetate 1968 45f> Methodtor the determination of vanadium in silicate materials b\ atomic-absorption spectrophotometry 1969 457 The determination of rubidium and caesium in silicate materials by atomic-absorption spectrophotometry 1969 459 Determination of tantalum in rocks and minerals by paper-partition chromatography 1^*69 4f>0 A rapid method for the determination of minor amo .nts of thorium in aqueous solutions of uranyl nitrate or chloride \9M 464 The saturation pressure of nitrogen in determinations of surface area 1969 465 The determination of aminoid nitrogen in organic compounds by the Kjeldahl method t*>69 466 The volumetric determination of aluminium in silicate materials 1969 470 Rapid estimation of uranium in raffinate solutions containing thorium by the pyridylazo-naphthol method 1969 47.1 Mincralogical examination of tantalite-bearing samples from the Warmbad district. South West Africa 1M6S 474 The IAKA Conference on the Use of Nuclear Techniques in the Prospecting and Development of Mineral Resources ll>69 477 Balanced-temperature analysers l^b^ 4X2 Review of work on the treatment of pegmatites 1969 483 Summary of the mineralogical investigation of pegmatites 1969 485 Gravimetric determination, using nitron, of nitrates in uranium compounds 1969 4X6 Determination of strontium in ores by atomic-absorption and emission spectrophotometry I °69 487 The spectrophotometry determination of minor quantities of vanadium in silicate materials 1969 489 Thermal analysis. Overseas visit l°69 17 NIM PUBLICATIONS No. Title Year 491 The determination of nickel, copper and cobalt in a nickel alloy matte 1969 493 Concentration of andalusite from alluvial sands from the farm Goedgelegen. Groot Marico district 1969 494 i\ preliminary study of beryllium distribution in phyllosilicates from the Etiro pegmatite. Karibib. South West Africa 1969 496 A preliminary study of beryllium distribution in quartzes from the Etiro pegmatite. Karibib. South West Africa 1969 497 The determination of feme iron using Tiron 1969 498 An infrared investigation of the potassium alkyl xanthate and alkyl trimethyl ammonium bromide mixed-collector system 1969 499 The determination of molybdenum by atomic-absorption spectrophotometry 1969 502 The volumetric determination of chloride and bromide using mercurous perchloratc 1969 503 Rapid estimation, by the ammonium thiocyanate method, of uranium in raffinatt solutions containing thorium, lead, and copper 1969 504 The influence of preadsorbed oleate ions on the adsorption of water vapour by insoluble ionic crystals 1969 508 The distribution of nickel in serpentinite samples of borehole cores from the Msauli Mine, Barberton 1969 510 The performance of a clarifier subject to low-intensity turbulence 1969 511 The determination of silica in chrome ores and chrome refractories 1969 512 The distribution of nickel in two surface samples of serpentinite 1969 513 Gold recovery by cyanidation from mill products obtained after pyrite flotation 1969 515 The influence of sulphydryl and cationic flotation reagents on the cyanidation of native gold 1969 517 Radiotracer tests on the pachucas on the uranium plant at Western Reefs Mine 1969 518 The prediction of gravity or inertial separation efficiencies from heavy-liquid tests and Tromp-type efficiency curves. An improved method 1969 524 The determination of minor amounts of molybdenum in soil samples 1969 526 The determination of the platinum-group metals and gold in ore samples 1969 527 Quantitative aspects of the interaction between galena, xanthate, and oxygen at a pH value of 10 1969 529 The determination of uranium in the organic solvent from the Purlex Process 1969 530 The measurement of 14 McV neutron fluxes from a neutron generator 1969 IK MM PUBLICATIONS So. Title Year 533 Determination of the stoichiometry and stability constants of mercuryOD-cyanide-xanthate complexes. I. Low-concentration region !969 536 The distribution of nickel in limonite-bearing birbirite and gossan from Vlakfontein and Groenfontein in the western Transvaal 1969 537 Flame-photometric determination of lithium with the Teehtron AA4 spectrophotometer 1969 837 The association of gold and uranium with other minerals in different Witwatersrand reefs 1969 845 An electron-microprobe study of the nickel distribution in a serpentinite from Volspruit. Potgietersrus 1969 847 The liquid-liquid extraction of ferric thiocyanatc complexes with carboxylic acids 1969 848 The distribution of nickel in serpentine from Lusinzi. north-eastern Transvaal 1969 853 The determination of silicon in ferrochrome alloys 1971) 857 The volumetric determination of bismuth in metallurgical ores and concentrates 1969 870 Determination of the stoichiometry and stability constants of mercurydlh-cyanide-xanthate complexes. II. High-concentration region 1970 884 Review of information on the mineral industry of Mozambique 1971) 889 The simultaneous determination, by instrumental thermal-neutron activation analysis, of some selected trace elements likely to be present in lunar material 1969 890 The determination of the platinum-group metals and gold in ore samples— Part II 1969 891 Calibration of the 'Universal Voltronics' power supply for the neutron generator manufactured by Accelerators Incorporated 1969 894 The determination of thorium in silicate rocks 1969 897 Nickel in South Africa with special reference to low-grade nickcliferous ores 1970 898 The development of a computer programme for countcrcurrent operations involving liquid-solid solute separations 1970 911 The recovery of gold from sulphidic and arsenical ores mainly from the Barberton area 1970 938 I.iff test on IRA 400 resin during the recovery of zinc chloride 1970 943 An electron-microprobe investigation of chiastolite crystals 1970 950 A m neralogical study of eight samples of phosphate ore from Steenkampskraal. Van Rhynsdorp. Cape Province 1970 951 C'olorimetric determination of minor quantities of nitrate in uranium compounds 1970 I'i NIM PUBLICATIONS No. Title Year 952 The analysis of ferrochrome slag 1970 %1 The preparation of standard solutions for the platinum-group metals and gold 1970 964 The recovery of copper from sulphate leach liquors by liquid ion exchange with LIX-64N ' 1970 965 The spectrophotometry determination of phosphate in leach residues and solutions 1970 967 Automatic timing of the neutron-generator counting station 1970 970 The determination, by atomic-absorption spectrophotometry, of platinum. palladium, rhodium, ruthenium, gold, silver, and lead, in prills 1970 971 The determination of gold by atomic absorption, and of platinum, palladium, rhodium, and iridium by spectrophotometry, in solutions 1970 975 Visit to the Tripartite Chemical Engineering Conference in Montreal 1970 976 The determination, by atomic-absorption spectrophotometry. of gold in cupcilation prills and in platinum-metal concentrates 1970 977 The collection and lapid determination of noble metals in ores and concentrates by the fusion technique using lead as a collector 1970 987 Rhythmic-activation analysis 1970 991 The determination of thorium in solid samples and in solutions resulting from the leaching of ores 1970 994 The separation and determination of noble metals by reversed-phase extraction chromatography 1971 996 An improved distnbuted-paramcter model for the kinetics of mineral flotation 1970 998 The determination of macroscopic amounts of total rare-earth oxides and thorium oxide 1970 1003 The chromatographic separation and determination of platinum, palladium, rhodium, and iridium 1970 1005 Modifications to the Intertechnique 4000-channel analyser 1970 1010 The leaching, with hydrofluoric acid, of materials containing tantalum and niobium 1970 1012 The coordination numbers of cyanide complexes of zinc, cadmium, and mercury in aqueous solution 1970 1013 The instrumental neutron-activation analysis of samples taken at different levels of the E.R.P.M. Mine 1970 1017 The spectrophotometry determination of rhodium 1970 1020 Phase relationships involving iron, chromium, silicon, and carbon, with special reference to high-carbon ferroehromium and fcrrochromium-silicide alloys. A literature survey 1970 N1M PUBLICATIONS \'o. Title Year 1025 An introduction to stochastic differential equations. Abbreviated lecture notes 1971 1026 Small-scale flotation techniques l**70 1028 Exploratoiy heavy-liquid separation tests on a low-grade apatite concentrate 1970 1031 The dissolution of UO; as an electron-transfer reaction 1970 1037 The determination of gold in concentrates of the platinum-group metals after extraction with dibutyl Carbitol' 1970 1043 The determination of ruthenium in uranyl fluoride 1970 1044 The determination of ruthenium in uranyl fluoride 1970 1048 The determination, by neutron-activation and tracer techniques, of the losses of iridium during the fire-assay procedure for the platinum-group metals 1970 1049 Exchange visit to the Institut fur Spektrochemie und Angewandte Spektroskopie in Dortmund. West Germany 1970 1075 The preparation of PADAP — 2-(2-pyridylazo)-5-diethylaminophenol (zinc complex) 1970 1076 The direct determination of acid-soluble uranium in silicate ores and in the solutions resulting from leaching these ores 1970 1077 The determination of acid-soluble, acid-insoluble, and total uranium in silicate ores 1970 1078 The complexometric determination of zinc in ores and concentrates, wjth ion-exchange resin 1970 1085 The optimization of the design of a countercurrent liquid-liquid-extraction plant using LIX-64N 1970 1086 The determination, by atomic-absorption spectroscopy, of platinum, palladium, rhodium, ruthenium, and gold in the presence of base metals 1970 1088 The determination of ferrous iron in refractory minerals 1970 1089 The rapid volumetric determination of calcium in pregnant solutions in 'iranium plants 1970 1093 The calculation of the equilibrium distribution of metal-ion complexes in multicomponent aqueous systems 1970 1096 The spectrophotometry determination of titanium in ores, rocks, and minerals, with diantipyrylmethane 1970 1106 Computerization of atomic-absorption data with the Olivetti Programma 101 1970 1108 Interferences relating to the determination of the noble metals by atomic-absorption spectrophotometry 1970 1113 The determination of uranium in ores and solutions bv X-rav fluorescence 1970 N1M PUBLICATIONS So. Title Year 1114 A study of the products of reaction between galena and aqueous xanthatc solutions 1470 1125 Studies of the stability of xanthates and dixanthogcn in aqueous solution, and the chemistry of iron xanthates and cobalt xanthates 1971 1137 The determination of the platinum-group metals and gold in ore samples— Part III 1471 1144 Three-dimensional predominant-area and solubility diagrams for the uranyl carbonate and uranyl sulphate systems at 25 "C 1471 1145 The use of 2-(2-pyridylazo)-5-diethylaminophenol as a spectrophotometric reagent for the determination of uranium IV71> 1153 E„/E„ diagrams. Their use in the estimation of unknown standard reduction potentials, with particular reference to the J'" electron-configuration ions 1470 1154 The extraction and separation of niobium and tantalum by liquid-liquid extraction using tri-ii-butyl phosphate 1470 1158 The production of ferric sulphate and sulphuric acid by the autoxidation process using the Fring"s Aerator 1470 Ilf>3 The computer programming of atomic-absorption measurements on the Olivetti Programma 101 1470 1172 A visit to Outokumpu Oy Research Laboratory in Finland 1470 1178 Further leaching tests, with hydrofluoric acid, on a tantalite concentrate 1470 1174 The spectrophotometric determination of iridium 1471 1185 The recovery of noble metals for analysis. A radiotracer investigation of losses 1471 1203 The chromite of the Bushveld Igneous Complex. An assessment of published information 1471 1204 The flotation of phoscorite ores. Possible correlations between chemical variables in solution and metallurgical performance 1471 1205 The adsorption of uranyl species on pyrophyllitc. quartz, and :icid-treated South African uranium ores. A preliminary investigation 1471 1206 A review of the South African platinum-mining industry 1471 1209 The economics of instrumentation for the cyanidation of gold 1471 1217 Investigation of beach sands from Bantu Area No. 4. Nhlabane. Zululand 1471 1218 The acid-extraction of noble metals from low-grade concentrates and ores, and the subsequent determination of platinum, palladium, rhodium and gold 1471 1219 Spectrographs analysis for the noble metals present in solutions 1971 1222 The liquid-liquid extraction of zinc from zinc chloride solutions by the use of di-2-ethyl hexyl phosphoric acid 1471 N1M PUBLICATIONS No. Title Year 1230 The determination of copper and zinc in borehole cores with the Ekco Mineral Analyser 1971 1232 The determination of osmium 1971 1245 The separation of non-volatile noble metals by reversed-phase extraction ch romatography 1971 1247 The pelletizing of chromite fines. A preliminary investigation of the preparation of cold-bonded pellets 1971 1257 Aspects of the Seventh X-ray Analytical Conference, Durham. September 1970 1971 1260 Interference by base metals in the spectrophotometric determination of platinum metals 197! i 267 The development of an electrodeless conductivity meter 1971 1268 A two-stage process for the recovery of flotation concentrates from copper-zinc ores 1971 1273 The coprecipitation of noble metals from tellurium. I. Platinum, palladium, rhodium, and gold 1971 1281 The heavy-medium cyclone concentration plant for the treatment of andalusite sands on the farm "Wonderfontein'. Groot Marico district 1971 1282 The determination of free hydrofluoric acid in the leach liquors fri-*»i tantalum-niobium ores 1971 1296 A review of reactions in the flotation system galena-xanthate-oxygen 1971 1305 The determination of total sulphur in the dust from nylon thread 1971 1308 Heavy-medium tests for the treatment of pegmatite ores and dump material in Namaquahnd 1971 1310 South African costs of industrial equipment for the metallurgical industry 1971 1318 The determination, by atomic-absorption spectrophotometry, of osmium and iridium in solution 1971 1319 Nickel minerals from Barberton. V. Trevorite 1971 1322 The preparation and analysis of minerals for use as reference material. Progress report no. I : 'Yl 1 1324 The separation of base metals from noble metals by cation exchange 1971 1340 The cadmium-cyanide-xanthate system 1971 1343 The Pyrometallurgical Research Group's current research programme on ferro-alloys 1971 1351 Preliminary report on the analysis of the six NIMROCgeochcmical standard samples 1972 N1M PUBLICATIONS No. Title Year 1356 Nickel in samples of serpentinite from Kaapsehoop. Barberton 1971 1361 An electron-microprobe analysis of gold in the Witwatersrand banket and in ores from the Barberton Mountain Land 1 971 1365 Studies of incipient fusion in the system chromite-MgO-AI.,OrSiOJ-C 1972 1366 Liquidus temperatures, viscosities, and electrical conductivities of lime-containing slags produced during the smelting of high-carbon ferrochromium and ferrochromium-silicide alloys 1971 1371 Concentration of noble metals by a fire-assay technique using nickel sulphide as the collector 1 97! 1372 The electrical double-layer properties of kimberlite suspensions 1971 1374 Flotation tests on copper-zinc ore from Letaba district IV71 1380 An electrochemical model for the leaching of uranium dioxide 1972 1384 Flotation tests on samples of Canadian copper-zinc ores 1971 1388 Flotation tests on samples of copper-zinc ores from ('inland 1971 1394 The determination of ferrous iron in ehromites and chromium ores 1972 1398 The pclletization of chromite fines. Preparation of pellets bonded with bentonite and indurated by heat treatment 1971 1401 The pressure dissolution of platinifcrous materials by the sealed-tube technique [superseded by Report 18521 w- 1402 A study of mineral-surface properties by the use of gas-adsorption measurements 1972 1403 The coagulation and flocculation of suspensions of kimberlite 1972 1408 The determination of molybdenum in the solids and solutions resulting from the processing of Witwatersrand uranium ores 1972 1414 The use of a closed recirculation apparatus in the study of the galena-oxygen-xanthate system 1972 14 i 5 The interrelation of the chemical, physical, and certain metallurgical properties of chrome spinels from the Bushveld Igneous Complex 1972 1423 The effects of chromium oxide, iron oxide, and calcium oxide on the liquidus temperatures, viscosities, and electrical conductivities of slags in the system MgO-AI.O-SiO, 1972 1424 A review of the World's fluorspar industry, with particular reference to South Africa 1972 1425 The effect of the reactivity of lime on desulphurization efficiency in the basic oxygen furnace 1972 1427 The pressed-fused disc — a technique for the preparation of ore samples to be analysed for uranium by X-ray fluorescence 1972 NIM PUBLICATIONS So. Title Year 1428 The separation and determination of trace and minor amounts of individual rare earths in silicates 1972 1430 The use of the Ekeo Mineral Analyser for the determination of copper and zinc in the presence of iron 1972 1432 The determination of ruthenium and osmium in the residues resulting from the leaching of mattes 1972 1435 The determination of chromium, manganese, iron, cobalt, and nickel by atomic-absorption spectrophotometry using the nitrous oxide-acetylene flame 1972 143fi A computer progiamme tor the simulation of the performance of a flotation plant. Revised report 1973 1438 A mineralogical examination of fluorspar ores from the Ottoshoop area 1972 1439 The reaction of sulphide minerals with thiol compounds 1972 1443 Gravity concentration tests on four samples from Tantalite Valley. SWA. 1972 1445 Cost assessments for the production of andalusite concentrates 1972 1447 A preliminary electrochemical investigation of the galena-xanthate-oxygen system in aqueous solution 1972 1448 A potentiostatic study of the anodic dissolution of uranium dioxide in aqueous solutions 1972 Í454 A dynamic model for the extraction bank of Purlex plants 1972 1457 Phase equilibria in the Cr-Fe-Si-C system in the composition range representative of high-carbon ferrochromium alloys produced in South Africa 1972 1458 Liquidus temperatures in the Cr-Fe-Si system in the composition range representative of ferrochromium-silicide alloys produced in South Africa 1972 1463 Liquidus temperatures and activities of manganesedi) oxide in slags associated with the production of high-carbon fcrromanganese alloys 1972 1467 The spectral analysis of solutions. I. The analysis of rare-earth minerals 1972 1476 A magnetic-tape-oriented system for data reduction in neutron-activation analysis 1972 1477 The control of Purlex plants 1972 1478 An examination of two andalusite-bcaring samples from MagostaJ No. 6. Marico district, western Iransvaal 1972 1479 Infrared studies of the adsorption of oleate species on mineral surfaces, with special reference to fluoritc 1972 1482 Reactions occurring during the smelting of high-carbon ferrochromium from Transvaal chromite ores 1973 1483 The South African manpower requirements in extractive metallurgy 1972 NIM PUBLICATIONS \o. Title Year 1484 Cost estimates for the production of copper wirebars from sulphidic ores 1972 I486 Review of the fluorochemical industry of the World 1972 1488 Extraction of rutile from Highveld smelter slags 1972 1489 The breakage of Soderberg electrodes 1972 1490 The adsorption of krypton, nitrogen, and water vapour on sodium oleate 1972 1491 Technology and economics of the Claus kiln under South African conditions 1972 1495 A method for the determination of elemental sulphur on the surface of sulphide minerals 1972 |4M9 The production of medium-carbon ferrochromium 1972 1500 The chromatographic separation and determination of noble metals in matte-leach residues 1973 1503 Fast-neutron-activation analysis for the determination of oxygen in rock samples 1973 1505 The production of the refractory aluminium silicates, with special reference to South Africa 1973 1508 The selection of economically mineralized pegmatites according to their border-zone characteristics 1973 1509 The instrumentation developed for electrochemical studies of the leaching of uranium oxide 1973 1513 The upgrading of chromite ore from Moreesburg 1973 1514 The determination by X-ray-fluorescence spectrometry of minor amounts of niobium and tantalum in geological materials 1973 1515 A mineralogical investigation of (itaniferous magnetite from the Mambula Intrusion. Natal 1973 1517 Computer-controlled flotation plants in Canada and Finland 1973 1521 Tlu ssipation of electrical power in the burden of a submerged-arc furnace 1973 15:: An eleclron-microprobe investigation of an exsolved mineral in a sample of 1526 magnetite 1973 1527 Heal of solution as a control of aqueous-ammonia concentration 1973 The physicochemical properties of slags associated with the smelting of nickel 1529 sulphide concentrates 1973 1530 South African costs of equipment for the metallurgical industry (1972) 1973 AURTiOI. —an X-ray-absorption analyser for (he determination of the uranium on loaded resin in ion-exchange plants 1973 NIM PUBLICATIONS No. Title Year 1533 Fields of application for dispersive and non-dispersive X-ray-fluorescence instruments 1973 1534 The determination, by atomic-absorption spectrophotometry, of noble metals in the presence of sodium, barium, or sulphate ions. A comparison of uranium and lanthanum as releasing agents 1973 1541 Further tests on beach sands from Bantu Area No. 4, Nhlabane. Zululand 1973 1544 The recovery of salable ferrochromium from material discarded by Ferrometals Limited 1973 1545 A mineralogical investigation of leach residues from the Blyvooruitzicht Gold Mine 1973 1546 Pilot-plant smelting campaign on iron ores from Tete 1973 1547 Physicochemical and thermodynamic properties of slags in the system MgO-AIO.t-SiO, 1973 1548 Physicochemical properties of slags in the system MgO-AljO,-SiOL. and their application to the technology of ferro-alloy smelting 1973 1549 Thermodynamic and related physicochemical factors pertaining to the production of ferromanganese. A literature survey 1973 1550 A fundamental study of the dissolution in acid solutions of uranium minerals from South African ores 1973 1552 The preparation and analysis of minerals for use as reference material. Progress report no. 2. 1973 1553 Characterization of the flotation properties of fluorspar from small-scale batch and pilot-plant tests 1973 1555 The analysis, by atomic-absorption spectrophotometry, of maite-leach residues 1973 1556 The spectral analysis of solutions. 2. The analysis of leach liquors, concentrates, slags. and residues 1973 1557 Cost estimates for the production of pig iron in the Tete district of Mocambiquc 1973 1559 A cost assessment of the production of elemental sulphur by chlorination roasting 1973 1562 Application of a flotation model to an industrial plant 1973 1563 Neutron-activation analysis of samples from the Kimberley Reef conglomerate 1973 1565 A mineralogical investigation of the vanadium-rich titaniferous iron ore from Tete. and the slag produced from it 1973 1566 Comparative tests on coke. char, and anthracite 1973 1567 Estimation of the parameters in the distributcd-constant flotation model 1974 156H A computer programme for the estimation of parameters in flotation 1973 NIM PUBLICATIONS M>. Title Year 15f>9 The use of DDTU as an analytical reagent for the nohle metals 1973 1571 The commissioning of a direct-reading spectrometer for the analysis of silicate rocks by the use of the graphite-pellet technique 1973 1573 A pilot-plant investigation of a flotation model 1974 1574 The chromatographic separation and gravimetric determination of nohle metals in matte-leach residues 1973 1575 The recovery of zinc from pickle liquors by ion exchange 1973 1577 Quantitative analysis of fluorite ores by X-ray diffraction 1973 1579 The determination of tin in geochemical-survey samples 1973 15X0 The determination of silver in ores, concentrates, and mattes 1973 15X1 The computer calculation, from fundamental parameters, of influence coefficients for X-ray spectrometry 1974 15X2 The construction and testing of a precision calorimeter 1973 15X3 Preliminary tests on winnowing for the recovery of mica 1973 15X7 A preliminary investigation of the flotation of copper-activated sphalerite without the use of collectors 1973 15X9 Preliminary investigations into the flotation of tin dioxide, cassiterite. and some related gangue minerals 1973 1590 The separation of osmium from ruthenium in hydrochloric acid solutions 1974 1591 The inductive measurement of conductivity in -.lags 1974 1592 The determination of line intensities in the presence of interfering spectra in dispersive X-ray-fluorescence spectrometry 1974 1595 Preliminary tests on low-grade brecciated fluorspar ore from the Ottoshoop district 1973 1597 The role of sulphur in the flotation of sulphide minerals 1974 I59X The use of carbon-rod devices in the determination of noble metals by atomic-absorption spectrophotometry 1974 1599 The analysis of silicate rocks and metallurgical slags by X-ray-fluorescence spectrometry 1974 1600 Dilute-acid leaching of slag from I etc ore 1973 1602 The roasting of fete slag for the extraction of vanadium 1973 IftOft The electrical-resistance characteristics of the charge in the electric reduction furnace 1974 lf>07 The analysis of ion-exchange resins by X-ray fluorescence 1974 NIM PUBLICATIONS No. Title Yeur 1609 An interlaboratory inalvsis of two ferrochromium slags 1974 1 hi 1 The X-ray-fluorescence determination of percentage concentrations of niobium and tantalum in ores and minerals 1974 1612 Flotation tests on sulphide-bearing high-grade brecciated and wad ores 1974 1613 The deactivation of copper-activated sphalerite with cyanide 1974 Ihl4 The extraction of rutile from smelter slags 1974 1615 Fluorspar pellets. A survey of the World market and an assessment of future South African production 1974 lhl7 An electronic differential precision thermometer 1974 Ihl9 Reduction of the chromium in ilmcnitc concentrates 1974 \bl\) The recovery of titanium dioxide from Tete slag by the sulphate route 1974 1621 Correction for matrix effects in the analysis of solutions by X-ray-fluorescence spectrometry 1974 Ih22 The electrical conductivity of the charge in a ferrosilicon iurnace 1974 1625 The determination of uranium and thorium by the use of delayed neutrons 1974 Ih2h Formation constants of zinc chlorocomplexes in perchlorate medium 1974 1628 The recovery of non-ferrous metals from a secondary blast-furnace slag 1974 1629 The thermodynamics of the formation of complexes of silver with some substituted pyridines 1974 1630 An electrochemical investigation of the dissolution of copper, nickel, and copper-nickel alloys in ammonium carbonate solutions 1974 1632 A mineralogical examination of beach-sand concentrates from a pilot plant at Richards Bay 1974 1635 Magnetic separation tests on Tete slag and ore 1974 1636 Trace elements in diamonds from the Premier. Finsch. and Jagersfontein Mines, and their petrogenetic significance 1975 1638 The determination of trace elements in natural diamonds by instrumental neutron-activation analysis 1975 1639 The determination, by !4MeV neutron-activation analysis, of small amounts of oxygen and silicon in diamond 1974 1640 A semi automatic titrimetcr for cyanide analysis I97J 1643 Further tests on low-grade brecciated fluorspar ore from the Ottoshoop district 1974 1644 Prospects for the recovery of minerals from the sea 1974 MM PUBLICATIONS V<>. Title Year 1646 Examination of the methods of analysis for calcium fluoride in fluorspar 1474 1647 The industrial application of KEGOl.D tlcct.odes 1474 1644 The establishment of preferred values for a series of fluorspar samples 1474 1650 [he production of medium-carbon ferrochroniium allow In solid-state reduction 1474 1652 The identification of diamonds from Premier. Iinsch. and Jagcrsfonlein Mines. by statistical analysis of data obtained from instrumental neutron-activation analysis 1475 1(04 The determination of osmium in platiniferous media I'^s 1656 The analysis of geological samples for trace elements by direct-reading emission spectrometry I474 1660 An economic assessment of the production of high-grade fluorspar pellets 1474 1664 ["he smelting of copper-nickel concentrates in an electric furnace I4"4 166s The determination of minor amounts of antimony in ores and concentrates by atomic-absorption spectrophotometry 1474 1668 An updated summitry of the World's fluorspar industry 1474 1664 An assessment of the carbon-rod atomi/cr for the determination of silver 1474 I67(i Neutron-activation analysis of routine mineral-processing samples |y"4 1671 Pyrometallurgical retreatment of a slag for the recovery of vanadium 1474 1681671" Th/he determinatiodetection ofn noble-metaof sulphur anl impuritied phosphorus ins irefinen chromitd noble-metae l solutions by 147.s thin-layer chromatography I 474 16X4 The application of three-phase liquid-liquid extraction lo the separation and concentration of noble metals 1474 1685 The MKTSKP process for the separation and recovery of /inc. iron, and hydrochloric acid from spent pickle liquors |474 1687 Iht' viscosities and electrical conductivities of slags associated with the production of high-carbon ferromanganese alloys 1475 1688 The analysis of nickel-refining solutions: separation of trace elements by liquid-liquid extraction followed by atomic-absorption measurement 1474 16X4 The determination, bv atoinic-ahsorplion spectrophotometry, of arsenic, selenium. tellurium, antimony, and bisrntilh on ion-exchange resins |4~s 1641 The determination of zirconium and aluminium by l4MeV neutron-activation analysis 1475 Ib'M Research at the National Institute for Metallurgy on the engineering aspects of copper clectrowinning ll'75 MM PUBLICATIONS No. Title Year 1696 The preparation and certification of a reference sample of a precious metal ore 1975 1697 A petrographic and mineralogical investigation of silica samples from the farm Elandskraal 470 JO. Rustenhurg district 1975 1698 Measurement of the electrical resistance of ferrochromium furnace charges 1975 1703 The geochemistry of some selected South African kimberlites and associated heavy minerals 1976 1705 The effects of various matrix elements on the efficiency of the fire-assay procedure using nickel sulphide as the collector 1975 1706 Concentration of magnesite from Apiesbomen. Burgersfort district 1975 1707 The work of the Pyrometallurgy Research Group at the University of the Witwatersrand 1975 1708 An examination of the suitability of various reducing agents for the production of ferrochromium 1975 1709 The mineralogy, chemistry, and certain aspects of reactivity of chromitite from the Bushveld Igneous Complex 1975 1710 The recovery of scheelite from Shongona. north-western Transvaal 1975 1711 The oxidation of aqueous solutions of ferrous sulphate in a bubble column 1975 1712 The thermodynamics of the formation of chlorocomplexes of nickel and copper(ll) in perchlorate medium 1975 1714 The efficiency of the fire-assay procedure, using nickel sulphide as a collector, for platinum, silver, gold, and iridium, and of the subsequent parting procedure 1975 1715 Flotation tests on various types of ore from the Ottoshoop district 1975 1717 The use of isothioronium compounds as liquid-liquid extractants 1975 1718 The determination of silver in lead, copper, and zinc concentrate? by instrumental neutron-activation analysis 1975 1719 An evaluation of the X-ray-fluorescence analysis of rocks and silicates under routine conditions 1975 1720 The initial development of processes for the direct leaching of iron-nickel-copper mattes containing platinum-group metals, and for the production of ferronickel 1975 1721 A preliminary investigation into the mechanism of depression in the flotation of sulphide minerals 1975 1722 The determination of small amounts of fluoride in uranium compounds by use of an ion-selective electrode 1975 1723 The determination of zirconium and aluminium in zirconium-aluminium alloys 1975 1724 The preparation and reduction of chromite pellets containing a reducing agent 1975 31 NIM PUBLICATIONS So. Title Year 1725 The determination of silica in fluorspar by 14 MeV neutron-activation analysis 1975 1726 Mertieite and an unnamed compound of palladium with arsenic and tin in a mineral intergrowth from the Atok Mine 1975 1730 The chromitite from the Marico occurrence, western Transvaal, its alteration, and possible reasons for its refractory nature '975 1732 A mineralogical examination of eight nickel-bearing rocks from the Grasvally Chromite Mine 1975 1733 A mineralogical investigation of weathered carbonatite from Salpeterkop 1975 1736 The determination, by atomic-absorption spectrophotometry and liquid-liquid extraction, of antimony (parts per million) in ores and concentrates 1975 1739 The determination of trace amounts of noble metals in sulphate media 1975 1741 South African costs of equipment for the metallurgical industry (1975) 1975 1742 The determination of tin in ores, residues, and concentrates by X-ray-fluorescence spectrometry 1975 1744 The refining of the platinum-group metals 1975 1746 The determination, by atomic-absorption spectrophotometry, of minor elements in zinc. lead, and copper sulphide concentrates 1975 1747 Magnetohydrostatic separation of gold from gravity concentrates 1975 1749 Epithermal-neutron-activation analysis for uranium in Barberton and Bushveld granites 1975 1750 A review of the present and future development of sulphur production in South Africa 1975 1753 Full-scale flotation-plant data for modelling purposes 1975 1754 A new three-dimensional anodic electrode for reduced power consumption during the electrowinning of metals 1975 1761 The determination, by atomic-absorption spectrophotometry, of minor elements in anode sludges and residues 1975 1762 The determination, by instrumental neutron-activation analysis, of some elements in the NIMROC standard reference materials 1975 1764 Correlations of the free-energy and enthalpy changes of the d "' metal ions Ag'. Hg-', and Cd" with a variety of monodentate ligands 1975 1768 Some developments in gold extraction from Witwatersrand ores 1975 1769 An evaluation of the low-pressure ammonia-ammonium sulphate system for the leaching of local base-metal sulphides 1976 1770 The speetrophotometric determination of vanadium in chromium-bearing materials 1975 NIM PUBLICATIONS No. Tide Year 1771 The determination of silver, selenium, tellurium, antimony, tin, lead, and arsenic in anode sludges 1975 1772 A study of copper recovery by the lime-roast leach process 1975 1776 The extraction of copper from copper-nickel catholyte by cation exchange 1975 1777 Ferro-alloys in Brazil 1976 1778 An apparatus for the automatic measurement of current efficiencies during the electrodeposition of nickel in chloride media 1976 1779 A summary of work done on the concentration of andalusite from deposits in the western Transvaal 1976 1781 The determination, by ion-selective electrode, of fluoride in complex materials 1976 I 782 The application of air-sparging techniques to industrial electrodeposition of zinc from acidic zinc sulphate solutions ! 976 1783 The spectrographic determination of minor and trace elements in copper, lead, and zinc concentrates 1976 1 784 A single-standard calibration method for use in analysis by X-ray-fluorescence spectrometry 1976 1785 Some thermodynamic aspects of systems relevant to the flotation of sphalerite 19/6 1787 The determination, by atomic-absorption spectrophotometry, of trace elements in sulphide concentrates 1976 1788 A computer programme for emission-spectrographic calculations 1976 1790 The rapid determination of manganese, vanadium, and aluminium by instrumental neutron-activation analysis 1976 1791 A motivation for a pyrometallurgical pilot plant 1976 1792 The determination, by instrumental neutron-activation analysis, of some trace elements in sulphide ores and concentrates 1976 1793 The kinetics of mechanism of solvent extraction of copper by LIX 64N and KELEX 100 1976 1794 The application of three-phase liquid-liquid extraction to the analysis of bismuth and tellurium in sulphide concentrates 1976 1795 The determination of minor and trace elements in the leach liquors from anode sludges 1976 1796 The mechanism of the electrodeposition and dissolution of nickel from chloride media 1976 1797 A rapid atomic-absorption method for the determination of silver in sulphide ores and concentrates 1976 N1M PUBLICATIONS No. Title Year 1798 Interferences in the determination, »y atomic-absorption spectrophotometry, of copper, lead, and zinc in sulphide concentrates 1976 1799 An electrochemical investigation of copper cementation on iron 1976 1800 An electrochemical investigation of the dissolution and passivation of platinum in acid solutions 1976 1803 The preparation and analysis of minerals for use as reference material. Progress report no. 3. 1976 1804 The electrodeposition of nickel from ammoniacal solutions 1976 1807 The establishment of preferred values for a series of rare-earth samples 1976 1808 Spectrophotometric determination (with pyrocatechol violet as chromogenic agent) of aluminium in zirconium metals and in the residues from anode sludges 1976 1809 The analysis, by flameless atomic-absorption spectrophotometry, of pure selenium and tellurium 1976 1812 List of unrestricted NIM reports and papers published during the first decade of NIM's existence (1966 to 1975) [superseded by Report 1894) 1976 1813 The economic potential of some pegmatites from the Kenhardt area in relation to the trace-element content of their border zones 1976 1814 An updated summary of the World's fluorspar industry. 1975 1976 1815 The commissioning of an induction-coupled plasma system and its application to the analysis of copper, le?d, and zinc concentrates 1976 1817 The rapid determination by X-ray-fluorescence spectrometry of tungsten in tungsten ores and concentrates 1976 1818 A microprocessor-based system to control the feed to a ferro-alloy furnace 1976 1820 The thermodynamics of the formation of chlorocomplexes of iron(lll). cobaltdD. ironon. manganescdl). and copperdl) in perchlorate medium 1976 1822 Stability constants and linear free-energy relations for the platinum-group metals 1976 1823 The recovery of gold and pyrite from a residue dump at Crown Mines 1976 1825 The full automation of a Philips 1220 X-ray spectrometer 1976 1826 Dithiocarbamate as a releasing agent in the atomic-absorption determination of noble metals in organic media 1976 1828 y-picoline adducts of the nickel, copper, and zinc chelates of 2-thenoyltrifluoroacetone 1976 1829 An investigation of weathered carbonatite from Salpeterkop 1976 1830 The determination of iron in zircon beach sands and its teachability 1977 .14 NIM PUBLICATIONS No. Title Year U..>3 Effective thermal conductivities of packed beds of chromite ores 1976 1834 The analysis of slag and silicate samples with a fully automatic sequential X-ray spectrometer I 976 1836 The analysis of pilot-plant products for copper, zinc, and lead with the Telsec Lab-X-250 Analyser 1^77 1837 The rapid and precise determination of noble metals in matte-leach residues by atomic-absorption spectrophotometry 1976 1838 An investigation of the atomic-absorption s» ectrophotometric measurement of the elements that form gaseous hydrides ano .heir determination in metal sulphide concentrates 1 976 1839 A valence-bond study of dialkalis and alkali hydrides 1977 1840 The spectrophotometry determination of total uranium in silicate ores and leach liquors by use of bromo-PADAP 1976 1841 The determination of acid-soluble uranium in silicate ores and solutions 1976 1843 The treatment of Athlone Sewerage-plant effluent by the DESAL process 1976 The composition and mode of occurrence of gold in Witwatersrand ores and leach 1845 residues 1976 A pilot-plant investigation of a kinetic model for flotation 1976 1847 A revised method for the dissolution of platiniferous materials by the scaled-tube 1852 technique [supersedes Report 14011 1976 Chloromethylation of polystyrene resins 1977 1853 The interaction of pyrite, oxygen, and xanthatc 1977 1854 A study of model systems in anion exchange 1977 1856 The determination of some trace elements in sulphide concentrates by 1857 spectrophotometry 1977 The kinetics and mechanism of the non-oxidative dissolution of some iron sulphides 1858 in aqueous acidic solutions 1976 Increased current efficiency during electrodeposttion of manganese from sulphate 1859 electrolytes 1976 A preliminary investigation of materials of construction for ore hoppers 1976 I860 The determination of some impurities in zirconium metal by instrumental 1861 neutron-activation analysis 1976 The preparation of primary standard solutions for each of the noble metals 1977 1864 A sensitive method for the measurement of osmium hy atomic-absorption 1865 spectrophotometry 1977 NIM PUBLICATIONS No. Title Year 1867 NIM decennial review (1966 to 1976) 1977 1868 The reduction of fluxed and non-fluxed manganese ores by ferromanganese silicide 1977 1869 The separation and determination of trace elements in iron ore 1977 • 1871 Batch and pilot-plant flotation tests on copper-nickel ore fiom the Uitkomst ore-body 1976 1872 The determination of mercury by cold-vapour atomic-absorption spectrophotometry 1977 1873 The rapid reduction of gamma-ray spectra with a desk-top calculator 1977 1874 Activation analysis and classification to source of samples from the Kimberley Reef conglomerates 1977 1875 The determination of tungsten and iron in ferrotungsten alloys by X-ray-fluorescence spectrometry 1977 • 1876 The determination, by ultrasonic measurement, of the mud level in a thickener :nd the resin level in an ion-exchange column 1977 1878 The electrochemical dissolution of galena in aqueous solutions 1977 1879 Alkalis in the iron blast furnace 1977 1880 The electrochemical reduction of silver chloride and its application to the refining of silver 1977 1881 n-octylaniline, a new treatment for noble metals 1977 4 883 The determination of iron, chromium, titanium, and tungsten in ores and other materials, by X-ray-fluorescence spectrometry 1977 1884 The use of capacitance probes for the determination of interfaces 1977 1885 A data-logging system for a submerged-arc ferro-alloy furnace 1977 1886 A rapid method for the determination .>f fluoride in geological samples 1977 1888 The Imperial Smelting Process and its application to the smelting of complex zinc-lead-copper ores 1977 1889 Entropy relations in the formation of complexes of silverd). mercurydi), and cadmiumiii) with monodentate ligands 1977 1894 List of unrestricted NIM publications issued from 1966 to 1977 (superseded by Report 1970] 1977 1895 A review of applications of plasma technology with particular reference to ferro-alloy production 1977 1896 The interaction of chalcocite. oxygen, and xanthates 1977 th MM PUBLICATIONS No. Title Year 1897 A study of aggregation in the organic phase of solvent-extraction systems and its influence on the extraction process 1977 • 1898 Batch and pilot-plant tests on Merensky Reef ore from the Western Platinum Mine 1977 1899 The production of stainless steel in South Africa 1977 1902 The determination of boron in aluminium of high purity 1977 1904 Separation of rare earths from solutions of phosphoric acid 1977 1905 An examination of fire-assay techniques as applied to chromite-bearing materials 1977 1906 An automated instrument for measuring the effects of impurities on cathodic-current efficiency during the electrowinning of zinc 1977 1907 The application of the induction-coupled plasma system to spectral analysis 1977 1908 An analysis of the replies to a questionnaire on materials of construction for ore hoppers 1977 1911 Methods for the analysis of zinc-bearing materials, electrolytes, and process solutions 1977 1912 The determination, by X-ray-fluorescence spectrometry, of noble and base metals in matte-leach residues 1977 1913 The mechanism and rate of reduction of Mamatwan manganese-ore fines by carbon 1977 1914 The thermodynamics of the formation of sulphate complexes of iron(tii). cobaltdl), iron(ll). manganese!ID. and copperdl) in perchlorate medium 1977 1917 The instrumental neutron-activation analysis of granites from the Bushveid Complex 1978 1919 The determination, by X-ray-fluorescence spectrometry, of gold in activated charcoal 1977 • 1920 A mineralogical investigation of Mamatwan and Wessels manganese ores 1977 1924 The composition of chromite grains from various Witwatersrand reefs 1977 • 1926 The analysis of anode sludges by X-ray-fluorescence spectrometry 1978 1928 A liquid-nitrogen monitor for lithium-drifted germanium detectors 1977 1931 The equilibrium between the slag and the metal in the production of low-carbon ferromanganese 1977 1932 A basic computer programme for the evaluation of intensity data from the Telsec I.ab-X-250 Analyser 1978 1933 The determination of trace elements by thin-film X-ray-fluorescence spectrometry. and its application to zirconium 1977 1934 The speetrometric analysis of chromium-bearing materials with particular reference to ferrochromium slags and chromite ores 1977 NIM PUBLICATIONS No. Title Year 1935 The construction and testing of a small mixer-settler for use in the laboratory 1977 • 1936 The analysis of mineralogical and metallurgical materials. A guide to the analytical techniques and instrumentation available at the National Institute for Metallurgy 1978 1939 An industrial microprocessor system 1978 1940 The extraction of the noble metals with n-octylaniline, and its application to the analysis of platinum-bearing materials 1978 1942 The accuracy of assays for platinum-group metals and gold on flotation tailings of platinum ores from the Merensky Reef 1977 1943 A review of the literature on the separation and determination of rare-earth elements 1978 1945 Analyses of the NIMROC reference samples for minor and trace elements 1978 1947 The cation- and anion-exchangs behaviour of various base-metal chlorides in polar organic solvents 1978 1948 The measurement of trace amounts of gold in solution by atomic-absorption spectrophotometry and carbon-rod atomization 1978 1949 The kinetics of the leaching of zinc sulphide concentrates in acidic solutions containing ferric sulphate 1978 1950 Factors affecting the carbon contents of alloys formed during the prereduction of chromite ores 1978 • 1951 Potentialities and limitations of four-parameter equations for the correlation of formation constants of metal-ion complexes in aqueous solution 1978 1952 The effect of slag composition on copper losses to silica-saturated iron silicate slags 1978 • 1953 A fundamental investigation into the depression of copper-activated sphalerite 1978 1956 An improved ion-exchange separation of rare-earth elements for spectrographic analysis 1978 • 1957 Solid-state reduction, by graphite and carbon monoxide, of chromite from the Bushveld Complex 1978 • 1959 The slag-metal equilibrium and the activities of slag and metal components in the production of high-carbon ferromanganese 1978 1960 The recovery of ferrochromium furnace slags and related products 1976 • 1962 Supergene alteration of sulphide ores. I. Literature survey, measurement, and effect on floatability and teachability 1978 • 1963 An evaluation of the methods used at the National Institute for Metallurgy for the analysis of base-metal sulphide concentrates 1978 • 1964 The separation, by anion exchange, of noble metals on substituted cellulose 1978 .18 MM PUBLICATIONS No. Title Year • 1965 Analyses, by several laboratories, of three ferromanganese slags 1978 • 1967 The movement of the burden in submerged-arc furnaces for the production of higSi-carbon ferromanganese 1978 • 1968 The influence of cabonaceous reducing agents on the rate of reduction of representative manganese and chromium ores 1978 • 1969 The interaction of silicon monoxide gas with carbonaceous reducing agents 1978 • 1970 List of unrestricted NIM publications issued from 1966 to 1978 [superseded by Report 2013] 1978 • 1972 The preparation and certification of a reference sample of high-carbon ferrochromium 1978 • 1975 Reactions in the production of high-carbon ferromanganese from Mamatwan ore 1978 • 1976 The preparation and certification of two samples of chromium ore 1978 • 1977 The preparation and certification of a reference sample of hematite ore 1978 • 1978 The preparation and certification of a reference sample of magnetite ore 1978 • 1982 The resistivity of mixtures of Mamatwan manganese ore and reducing agents 1978 • 1984 The commissioning of the AEI MS702 mass spectrometer 1978 • 1985 The determination of boron in high-purity aluminium metal by spark-source mass spectrometry 1978 • 1988 The effect of particles on the stability of flotation froths 1978 • 1991 The determination, by atomic-absorption spectrophotometry, of europium in phosphoric acid and in rare-earth oxides 1978 • 1992 The use of optical emission spectrometry for the determination of impurities in metals 1979 • 1996 The extraction of gold from chloride solutions 1978 • 1997 A laboratory investigation of reducing agents for use in the electric-smelting industry 1979 • 1998 Electrode response to the addition of zinc during the cementation of gold 1979 •2002 The spectrochemical determination of phosphorus, magnesium, and iron in phosphate rocks and sulphurc acid leach liquors 1979 •200.1 An electrodeless conductivity meter of improved sensitivity and reliability 1979 •2005 The spectrometric analysis of manganese-bearing materials, with particular reference to ferromanganese slags and metals 1979 •2006 An examination of procedures for the analysis of dry powders by atomic-absorption spectrophotometry 1979 •2007 The instrumentation and computerization of a 25 MV-A submerged-arc furnace 1977 M NIM PUBLICATIONS 3. PAPERS BY MM STAFF The papers are arranged alphabetically according to author/s. and chronologically below author/s. Co-authors from other organizations are indicated by a series of superscripts, which are explained at the end of the list. These papers are not available from NIM, but can be consulted in the relevant journals or books to which reference is made. The papers that have been published since the previous issue of this list (Report 1970) are marked •. 411 MM PUBLICATIONS ALLISON. S.A., and FINKELSTEIN. N.P. A study of the products of reaction between galena and aqueous xanthate solutions. Trans. Instn Min. Metall.. vol. 80. no. 781. Dec. 1971 pp. C235-C239. ALLISON. S A . GOOLD. LA.. NICOL. M.J. and GRANVILLE. A. The products of reaction between sulphide minerals and aqueous xanthate solutions, and a correlation of the products with electrode rest potentials. Metall. Trans., vol. 3. no. 10. Oct. 1972. pp. 2M 3-2618 ALLISON. S.A.. HARRIS. P.J.. and MARSICANO. F. Depression and deactivation of sphalerite J. S.Afr. Inst. Min. Metall.. vol. 76. spec, issue. Oct. 1975. pp 123-124. ASHURST. KG., and FINKELSTEIN. N.P. The influence of sulphydryl and cationic flotation reagents on the cyanidation of native gold. J. S.Afr. Inst. Min. Metall.. vol 70. no 6. pt 2. Jan. 1970 pp 248-256 ASHURST. KG.. FINKELSTEIN. N.P. and GOOLD. I A. The coordination numbers of cyanide complexes of zinc, cadmium, and mercury in aqueous solution. J. chem. Soc. (A). 1971. pp. 1899-1902. ASHURST. KG.. FINKELSTEIN. N.P.. and RICE. N.M Studies of cyanide-xanthate mixed-ligand complexes of mercury ill). J. chem. Soc. (A). 1970. pp. 2302-2307. ASHURST. KG., and HANCOCK. R.D. Characterization of inner- and outer-sphere complexes by thermodynamics and absorption spectra. Part 1. Sulphato-complexes of the first-row transition elements. J. Chem. Soc.. Dalton Tram.. 197/. pp. 1701-1707. ASHURST. KG., and NE ALE. R.W. The porosity of gold electrodeposits. Trans. Inst. Metal Finishing. vol. 45. no. 2. 1967. pp. 75-82. ATMORE, R B.§§, HOWAT. D.D.*. and JOCHENS. PR. The effect of slag and gold bullion composition on the removal of copper from mine bullion bv oxvgen injection. /. S.Afr. Inst. Min. Metall.. vol. 72. no. I. 1971. pp. 5-11. AUSTEN. C.E.. and STEELE. T.W. The computer calculation, from fundamental parameters, of influence coefficients for X-ray spectrometry. ADVANCES IS X-RAY ASALYSIS Pickles. W.L.. Barrett, C.S., Nevikirk, J.B., and Runcl. CO. (eds). London. Plenum Press. 1975. vol. 18. pp. 362-371. BARCZA. N.A.. JOCHENS. PR., and HOWAT. D.D.* The mechanism and kinetics of reduction of Transvaal chromite ores 29th ELECTRIC FURS A CE COSFERESCE PROCEEDISGS. Metallurgical Society of AIME. New York. AIME. 1972. vol. 29. pp. 88-93. BARKER. I.J., and KING. R.P.* A real-time recursive filter applied to a milling circuit to estimate particle-size distributions AUTOMATIOS IS MISISG, MIS ERA I. ASD METAL PROCESSISG Lancaster, F.H. fed.). Pretoria. South African Council for Automation and Computation. 1977. pp. 263-275. BATRA, K.', SEE, J.B.. and KING. TB.it Flow behaviour of liquid metals on solid substrates. Metal Sci., vol. 11. no. 5. May 1977. pp. 145-151. BERNING. J . COOKE. R . HJEMSTRA, S.A., and HOFFMAN. U. The Rossing uranium deposit. South West Africa. Ficon. Geoi, vol. 71. 1976. pp. 351-368. BIBBY. D.M.. and RASMUSSEN, S. Reactor neutron flux monitoring with iron foils. Radiochem. radioanalyt. Lett., vol. 9. no. I. 1972. pp. 1-8. BIBBY. DM. and RASMUSSEN. S. Performance of a counting head for an automatic sample changer. Radiochem. radiounalyt. Lett., vol. 14. no. i. 1973. pp. 9-15. BIBBY. DM., and SELLSCHOP. J.P.F.* Determination of copper, zinc. iron, and silicon in copper/zinc ore flotation products by fast neutrons. Radiochem. radioanaht. Lett., vol. 12. no. 4-5 1972. pp. 245-257. 41 MM PUBLICATIONS BIBBY. DM., and SELLSCHOP. J.P.F.* The determination of oxygen and silicon in diamonds b> 14MeV activation analysis. J. radioanalxt Chem.. vol. 22. 1974. pp. 103-1 1 1. BOEYENS. J.C A Electrostatic calculation of bond energy. J. S.Afr. Chem. /mi., vol. 2ft.no. 3. ll>73. pp. 94-105 BOEYENS. J.C.A.. McDOUGALL. G.J . and SMIT. J.V.R.' Crystallography study of the ammonium-potassium 12-molyhdophosphate ion-exchange system. J. solid State Chem.. vol. IX ls>7h. pp. 191-199. BROOKS. H.C.+. and PAUL. R.L. Densities and excess volumes of fused halides Z Saturforseh. . vol. 30a. 1475. pp. 64-ft8. BRYNARD. H.J . DE VILLIERS. J PR., and VILJOEN. LA. A mineralogical investigation of the Merensky Reef at the Western Platinum Mine, near Marikana. South Africa. Earn. Geol. vol. 71.no. 7. 1976. pp. 1299-1307. BUSIfEl.L. L.A.. and VEITCH. M.L. The influence of chemical environment during milling on the flotation of zincfrom complex sulphide ores. J. S.Afr. Inst. Min. Metall.. vol. 7ft. spec, issue. Oct. 1975. pp. 143-145. CHANNON, W.P., and SEE. J.B. The reduction of fluxed and non-fluxed manganese ores b\ ferromanganese silicide. J. S.Afr. I mi Min. Metall., vol. 77. no. 8. Mar. 1977. pp. 151-162 CHANNON. W.P.. UROUH ART. R.C.. and HOW AT, D.D.* The mode of current transfer between electrode and slag in the submerged-arc furnace. J. S.Afr. Inst. Min. Metall., vol. 75.no. I. Aug. 1974. pp. 4-7. CLARKE. P.J. The National Institute for Metallurgy. South Africa. Stahlund Ei.sen. vol. 97. no 18. 8th Sep.. 1977. pp. 895-899. CLARKE, P.J. A new centre for metallurgical research — the National Institute for Metallurgy in Randburg. Afrika-Post, vol. 24. no. 11. Nov. 1977. pp. 337-340. (In German.) CLARKE, P.J. Recent progress of the National Institute for Metallurgy. Metall. vol. 32. no. 3. Mar 1978. pp. 288-289. (In German.) COALE. R.D.*. WOLHUTER. C.W.*. JOCHENS. PR., and HOWAT. D.D * Cementitious properties of metallurgical slags. Chem. Concr. Res., vol. 3. no. I. 1973. pp. 81-92. COLBORN. R.P.t, and NICOL. M.J. An investigation into the kinetics and mechanism of the oxidation of irontlD by oxygen in aqueous chloride solutions. J. S.Afr. Inst. Min. Metal!., vol. 73. no. 9. Apr 1975 pp. 281-289. COOK, E.B.T., and GEREGHTY, A. The spectrophotometric determination of uranium by use of 2-(2-pyridylazo)-5-diethylaminophenol (PADAP). Bull. S.Afr. Inst. Assavers Attaints, no. 12. Jul 1971. pp. 1-10. •CORRANS. I.J., and LEVIN, J. Wei high-intensity magnetic separation for the concentration of Witwatersrand gold-uranium ores and reiidues. J. S.Afr. Inst. Min. Metall., vol. 79, no. 8. Mar. 1979. pp. 210-228. •CRAIG. W.M.t. HAINES, A.K.. NICOL. D.I.. OLEN. CM.. DOUGLAS. M.F.F.tt. ;1nd I.OUW. G.D. The design and operation of a continuous ion-exchange demonstration plant for the recovery of uranium. J. S.Afr. Inst. Min. Metall.. vol. 78. no. 12. Jul. 1978. pp. 3lft-324. CZAMANSKE, O.K.. and M1HÁL1K, P. Oxidation during magnetic differentiation. Jinmoskia Complex. Oslo area. Norway: Part 1. The opaque oxides. J. Petrol, vol. 13. no. 3. pp. 493-509 4: NIM PUBLICATIONS DE VILLIERS. J.P.R. The crystal structure of braunite with reference to its solid-solution behaviour. Amer. Mineralogist, vol. 60. 1975. pp. 1098-1 l»W. DE VTLLIERS. J.P.R.. and BOEVENS. J.C. A Crystal structure of a calcium sulphate-urea complex J. Crxst. Mol. Struct., vol. 5. 1975. pp. 215-226. DE WAAL. S.A. Ramsdellite from the Hota/el Mine, northern Cape Province. South Africa. Tcon. Geo!., vol. 64. no. 2. 1969. pp 22 1-22:. DE WAAL. S.A. On the origin of hydrogrossularite and other calcium silicates in scrpentinites Trans. Geol. Soc. S.Afr.. vol. 72. pt 1. Jan -Mar 1969. pp 23-27. DE WAAL. S.A. Nickel minerals from Barberton. South Africa: I Ferroan trevorite. Am. Mineralogist, vol. 54. no. 7/8 Jul.-Aug. 196'). pp 12(14-1208 DE WAAL. S.A. Interference-folding of Bushvel.l Igneous Complex age in the Tran^vaai System north of Marble Hall. Transvaal. Johannesburg, iieological Society of South Africa. Spec. Pub 1. 19711. pp 283-298. DE WAAL. S.A. Nickel minerals from Barberton. South Africa: II. Nimite. a nickel-rich chlorite. Am Mineralogist, vol. 55. no. 1,2. Jan.-Feb I97'l. pp 18-30. DE WAAL. S.A. Nickel minerals from Barberton. South Africa: III Wjllemseite. ,i nickel-rich talc. Am Mineralogist, vol. 55. no 12. Jan.-Eeb. 1970. pp 31 -42. DE WAAL, S.A. South African nickeliferousserpentinites. Miner. Sci. Lngnq. vol. 3. no. 2 Apr I9"M, pp. 32-45. DE WAAL. S.A The Bushveld granites in the /aaiplaats area. Trans, (ieol. Soc S.Afr., vol. 75. pt 2 May-Aug. 1972. pp 135-144. DE WAAL. S.A. Nickel minerals from Barberton. South Africa: V Trevorite redescribed. Am. Mineralogist, vol. 57. no. 9,10. Sep.-Oct i»>72. pp 1524-1527. DE WAAL, S.A. The ferromanganese deposit at Lisbon Falls, near Oraskop. Transvaal, and its similarity to ferromanganese nodules of the ocean floor. Trans (ieol. Soc. S.Afr.. vol. SO. pt 2. I ''77. pp. 131-136. DE WAAL. S.A The alteration and possible reasons for the refractory nature of chromititc from the Marico occurrence, western Transvaal. Trans, (ieol. Soc. S.Afr.. vol HO. pt 3. 1'I7"\ pp. 235- 2tl>. DE WAAL. S.A. Carbon dioxide and water from mctamorphic reactions as agents for sulphide and spine! precipitation in mafic magmas. Trans (ieol. Soc. S.Afr., vol. 80. pt 3. 1977. pp. 193-196. •DE WAAL. S.A. The nickel deposit at Bon Accord. Barberton. South Africa — a proposed paleometeorite. Mineralization in mctamorphic terranes. Johannesburg. Geological Society of South Africa. Spec. Pub. 4, I "78. pp. 87 98. •DE WAAL. S.A. Nickel minerals from Barberton. South Africa: VIII. The spinels cochromile and nichromite and their significance to the Bon Accord nickel deposit. Bull. B.R.G.M., Section II. no. 3. 1978. pp. 225-230. DE WAAL. S.A.. and CALK. L.C8 Nickel minerals from Barberton. South Africa: VI. I.iebenbergite. a nickel olivine. Am. Mineralogist, vol. 58. no. 7/8. Jul.-Aug. 1973. pp. 733-735. DE WAAL, S.A.. and CALK. L.CS The sulfides in the garnet pyroxenite xenoliths from Salt Lake Crater. Ohio. J. Petrol, vol. 16. no. I. Feb. 1975. pp. 134-153. 43 MM PUBLICATIONS DE WAAL. S.A., and HERZBERG. W. Uranium and gold mineralization of the Black Reef Series in the Kaapse Hoop area. Nelspruit District, eastern Transvaal. Annals Geol. Surv. S.Afr., vol. 7. 1968-1969. pp. 111-124. DE WAAL. S.A.. and VILJOEN. E.A. Nickel minerals from Barberton. South Africa: IV. Reevesite. a member of the hydrotalcite group. Am. Mineralogist, vol. 56. no. 5/6. May-Jun. 1971. pp. 1077-1081. DE WAAL. S.A.. VILJOEN. E.A.. and CALK. L.C.§ Nickel minerals from Barberton. South Africa. VII. Bonaccordite, the nickel analogue of ludwigite. Trans. Geol. Soc. S.Afr.. vol. 77. pt 3. Sep.-Dec. 1974. p. 375. •ELLIOT, B.J.. SEE. J.B.. and RANKIN, W.J. Effect of slag composition on copper losses to silica-saturated iron silicate slags. Trans. Insm Min. Meiall.. vol. 87. Sep. 1978. pp. C204-C211. ELLIS. P.J.. COPELOW1TZ. I., and STEELE. T.W. The estimation of the mode by the dominant cluster method. Geosiandards Newsletter, vol. I. no 2. Oct. 1977. pp. 123-130. ENGELBRECHT. J.A.. and WOODBURN. E.T.t The effects of froth height, aeration rate, and gas precipitation on flotation. J. S.Afr. Inst. Min. Metall.. vol. 76. spec, issue. Oct. 1975. pp. 125-132. •ERASMUS. C.S.. and BOEYENS. J.C.A.» Cryslal structure of Ihe praseodymium /i-diketonate of 2.2.6,6-tetramethvl-3.5-heptanedione. Pr.(thd),,. Acta Crvstallographica, vol. B26. pt 11. Nov. 1970. pp. 1843-1854. • ERASMUS. C.S.. and BOEYENS. J.C.A.» Crystal and molecular structure of Iris (2.2,6.6-tetramethyl-3,5-heptanedionato)aquodvsprosium(lll). Dy(lhd),H..O. J. Cryst. Mol. Struct., vol. I. 1971. pp. 83-91. •ERASMUS. C.S.. FESQ. H.W.t. KABLE. E.J.D., RASMUSSEN. S.E.. and .SELLSCHOP. J.P.F.* The NIMROC samples as reference materials for neutron activation analysis. J. radioanalyt. Chem., vol. 39. 1977. pp. 323-334. •ERASMUS. C.S.. NOVAK. E . and SELLSCHOP. J.P.F.* The determination of copper in native gold by radiochemical separation and neutron-activation analysis. ABSTRACTS. 5TH SYMPOSIUM ON RECENT DEVELOPMENTS IN ACTIVATION ANALYSIS. I7TH-2IST JULY 1978. ST. CATHERINES COLLEGE. OXFORD. Geel (Belgium), Central Bureau for Nuclear Measurements. Joint Research Centre of the European Communities, pp. 126 (a. b. c. d). •ERASMUS. C.S.. SARGEANT. J.. SELLSCHOP. J.P.F.*. and WATTERSON, J.I.W. Multielement analysis of air >nd water pollutants in gold mines bv thermal and epithermal neutron activation. METHODS AND STANDARDS FOR ENVIRONMENTA L MEASUREMENT, PROCEEDINGS OF THE 8THIMR SYMPOSIUM HELD SEPTEMBER 20-24, 1976, GAITHERSBURG, Ml). Kirchoff. W.H. led.). Washington. National Bureau of Standards Special Publication 464. pp. 129-136. •ERAMUS, C.S.. SELLSCHOP, J.P.F.*. BIBBY, DM.. FESO. H.W.Í, KABLE. E.J.D.. KEDDY. R.J.. HAWKINS. D.M.V MINGAY. D.W.. RASMUSSEN. S.E.. RENAN, M.J.. and WATTERSON. J.I.W. Natural diamonds — major, minor and trace impurities in relation to source and physical properties./, radioanalyt. Chem., vol. 38. 1977. pp. 133-146. FAURE, A.Í, and TUNLEY, T.H. Uranium recovery by liquid-liquid extraction in South Africa. THE RECOVERY OF URANIUM. International Atomic Energy Agency. Vienna, the Agency. 1971. pp. 241-251. FESO. H.W.t. BIBBY. DM. SELLSCHOP. J.P.F'. and WATTERSON. J.I.W. The determination of trace-element impurities in natural diamonds by instrumental neutron-activation analysis. J. radioanalyt. Chem., vol. 17. 1973. pp. 195-216. 44 MM PUBLICATIONS PESO. H.W.i. KABLE. E.J.D.. and GURNEY. J J.' Aspects of the geochemistry of kimbcrlites from the Premier Mine and other selected South African occurrences with particular reference to the rare earth elements. PHYSICS AMD CHEMISTRY OF THE EARTH Ahrens. l.H. Dawson, J.B. Duncan. AR.. and Frlank, A.J. lea's.). Oxford. Pergamon. 1975. vol. 9. pp 687-707 FINKELSTEIN. N.P. Kinetic and thermodynamic aspects of the interaction between potassium ethyl xanthate and oxygen in aqueous solution. Trans, Irism Min. Meiall.. vol. 76. no. 724. Mar. 1967. pp. C51-C59. FINKELSTEIN, N.P. The influence of alkyltrimethyl ammonium halides on the stability of potassium ethyl xanthate in aqueous solution. J. appl. Chem.. vol. 19. Mar 1969. pp 73-76. FINKELSTEIN. N.P. Quantitative aspects of the role of oxygen in the interaction between xanthate and galena. Sepn Sci., vol. 5. no. .V Jun. 1970 pp. 227-256. FINKELSTEIN. N.P. The chemistry of the extraction of gold from it» ores GOLD METALLURGY IN SOUTH AFRICA. Adamson, R.J. led.). Johannesburg Chamber of Mines of South Africa. IV72. pp 284-351. FINKELSTEIN. N.P. The rate of decomposition of alkaline xanthate solutions. Colloid Polymer Sii., vol. 255. 1977. pp. 168-169. FINKELSTEIN. N P.and ALLISON. S A. The chemistry of activation, deactivation and depression in the notation of zinc sulphide: a review FLOTATION. A.M. 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PROCEEDINGS TWELFTH INTERNATIONAL SYMPOSIUM ON THE APPLICATION OF COMPUTERS AND MATHEMATICS IN THE MINERALS INDUSTRY Johnson, T.B., and Gentry. D.W. (eds). Colorado. Colorado School of Mines. 1974. pp. D57-D76. WETHMAR. J.C.M.. HOWAT. D.D.*. and JOCHENS. PR Phase equilibria in the Cr-Fe-Si-C system in the composition range representative of high-carbon ferrochromium alloys produced in South Africa. J. Meiall, Sci., vol. 9. 1975. pp. 291-296. WETHMAR. J.C.M.. HOWAT. D.D.*. JOCHENS. PR., and STRYDOM. O.A.W.* Liquidus temperatures in the Cr-Fe-Si system in the composition range representative of ferrochromium-silieide produced in South Africa. J. S.Afr. Inst. Min. Metall.. vol 73. no. 6. Jan. 1973. pp. 181-183 WOODBURN. E.T.t. KING. R.P.. BUCHALTER, EM., and PIPER. S.E. Integrated grinding and flotation control-computational problems in an optimum decision making model. A DECADE OF DIGITAL COMPUTING IN THE MINERAL INDUSTRY, Weiss, A. led.). New York. A1ME. 1969 pp. 695-728. WOODBURN. E.T.+. KING. R.P.. and COLBORN. R.P.t The effect of particle size distribution on the performance of a phosphate flotation process. Metall. Trans., vol. 2. no. II. Nov. 1971. pp. 3163-3174. WOOLl ACOTT. L.C.*. HOWAT. DO*, and JOCHENS. PR. The viscosities and electrical conductivities of slags associated with the production of high-carbon ferromanganese alloys. INFACON 74. Glen, H. led.). Johannesburg. South African Institute of Mining and Metallurgy. 1975. pp. 227-232. YOUNG. M.I... and SEE. J.B. Effective thermal conductivities of packed beds of chromitc ores. J. S.Afr. Inst. Mm. Metall., vol. 77. no. 5. Dec. 1976. pp. 103-113. ZANDERS. J.A.J. Single-ended differential instrumentation amplifier. Electron. Instrumn, vol. 4. no. II Mar. 1974. pp. 2-3. /ANDERS. J. A J. An electronic differential precision thermometer. Electron. Instrumn, vol. 4, no 12. Apr. 1974. pp. 24-25. 28. ZANDERS. J A.J. BIBBY. DM..and RASMUSSEN. S.E A simple automatic sample changer for the gamma-ray counting of reactor-irradiated samples. J. Phys. E: scient. Instrum., vol. 6. 1973. pp. 973-975. * University of the Witwatersrand + University of Natal t Atomic Energy Board S U.S. Geological Survey * Woodall-Duckham S V (Pty) ltd Israel Institute of Technology. Haifa ** MM PUBLICATIONS ** Kennecott Copper Corporation. U.S.A. t+ Blyvooruitzicht Gold Mining Co. Ltd tt Massachusetts Institute of Technology. Cambridge. U.S.A. §§ Rubor Limited ' Rossi tig Uranium. Ltd Rio Tinto South Africa Ltd " Sala Magnetics Ltd. Cambridge. U.S.A. " Anglo-Transvaal Consolidated Investment Co. Ltd ' Samancor Management Services (Pty) Ltd ' Hindustani Steel. India University of Cape Town University of Durban-Westville * Rand Refinery Limited Rand Mines Limited • South African Council for Scientific and Industrial Research Imperial College of Science and Technology, London x University of Queensland, Brisbane, Australia v> NIM PUBLICATIONS 4. NIM PATENTS The patents are arranged chronologically according to the date on which they were first registered. Copies are not available from NIM but can be obtained from The Patent Office, 25 Southampton Buildings. London WC2A 1AY. England. M> N1M PUBLICATIONS Ittli* ot patent Countrv Paten* no Date r xtraclion nl copper South Africa n", ;tw7 1 4 Ml Rh.Hk aa I 11 Ms -* S-4-M1 South West Atnca P6H IHI 5-4 6X /amhia /11 6S S-4-6X Canada SSH.47; «-4 Ml Congo Republic M.s.i. A I6-4-6X Chile ;s 464 1II-4-6X Apparatus and method tor < ireat Britain 4411.1 Ml P-4-6X ditfcrcntial thermal West Germans P 17 UN :>il I ;il.4.64 analvsis South Africa 67 56X11 |6-|ll-6« ISA "5H.6;i 1 1---64 Physical separation ot materials South Africa 7II 276- JII-4--II Improvements in and relating South Attica 2H-N -II to the contacting ot liquids South West Africa "ii titiiii JS-N.-II and particulate solids Chloride solutions containing South Africa 70 HSS» H-I:--II mixed metal chlorides Australia 'f.7 1 v 7| i"-;-"i South West Alnca 7| III 11) «-1 j ~i 1 uxemtsourg M 447 i i-i; ~i Grear Britain I.141.6> IK-I:--I lull '14 5 471 lis. i:--i 7 Belgium 7 6 41 J 17-IJ.-1 Canada 455 H67 i--i:7i hranee "1 45514 |7-i;.-i Contacting liquids and solids South Africa "1 H4II 5s.-J Contacting liquids and solids South Africa "I l|H in countercurrent Rhodesia -'on -; s.s.-; South West Africa 7; IIM ISA .i.ic.m N.S.-: (ireat Britain 1.1W.471 ii-s.-: Belgium "Hi 4<|7 i: i.-: ( anada u7x.-;; i:-5.-: Ï ranee 7: 17146 i:-5-": West (iermitnv P:: :ix:7 - i: 5.-: halt gss 4q7 n-5-7: Japan 47u<(4 -; 15-5.72 Luxembourg 65 1711 16.5.-; Australia 47:.7nu r s.-,, Recovers ot /me South Africa "1 I1II4H ;n i;-7i Recovers and separation of platinum South Africa 71.44X1 ;i 7.7; group metals and gold Separation and purification of platinum Rhodesia s:i,7; ;7-i;--; group metals and gold C ireat Britain I.4IX.14I M-7! 1 ranee 71 III4IX Its 1 -1 llalv 476 417 17-1-71 West Germans P;MI; i5ii i 17-1-71 South Africa 7MHIW ;ii-h-7i South West A'nea 7.VI1M4 ;(I-N-7.I fquipment for contacting South Africa 7;/4.I:N ;i>-6-7.1 liquids and solids South West Africa 7 1 064 ;ii-h -i Improved method of measuring South Africa 7; Improvements relating to South Africa 7:,i:n ;i ; 74 the controlling of processes Pie production of ferrochromium alloxs South Africa 7: >SIHU 14-1-74 The production of fefrochromium allovs South Africa 7:.MKU 14-1-74 Hie separation of platinum group metals South Africa 74 51 n't ; i. 7.75 and gold I S A 1.4X5.55; l-X-75 Belgium xi; ;i6 7-N-75 France 75 ;46XI 7.H 7.1 Norwav 75:77|i N N-75 A process for the treatment of mixtures South Africa 7.5H541 ;i i-76 of platinum group metals and gold 1'ranee 7MI::7'I ;NI-76 Bclgi. ,1 XIX 117.4 ."II 7h The determination of mineral South West Africa 76IIOXI 5 1(1-76 concentrations in slurries thereof South Africa 75 6 IN- 6 1(1-76 Stainless steel production South Africa 7s.-i(i(i IK-11 76 Rhodesia :H5 76 HI .'76 61 NIM PUBLICATIONS 5. OTHER TECHNICAL PUBLICATIONS The following technical publications are available free of charge from the National Institute for Metallurgy, Private Bag X3015, Randburg, 2125 South Africa. The publication that has been included since the previous issue of this list (Report 1970) is marked •. Notebook of experiments in extractive metallurgy for high schools. 1975. 42 pp. Continuous ion exchange in hydrometallurgy. Technical Bulletin no. 1. 1976. 16 pp. [Superseded by Technical Bulletin no. 2.] Handbook of the interference effects encountered in atomic-absorption spectrophotometry at the National Institute for Metallurgy. 28th Feb. 1978. 137 pp. •The NIMCIX contactor. Continuous ion exchange in hydrometallurgy. Technical Bulletin no. 2. Aug. 1978. 10 pp. f>2 MM PUBLICATIONS 6. CLASSIFICATION OF PUBLICATIONS ACCORDING TO PROGRAMME The publications are listed under each programme in the following order: reports, papers, patents, other technical publications. Because the programmes are very closely allied, many publications could have been listed under more than one programme. A reader in search of publications on a particular subject is therefore advised to consult all the programmes relevant to his subject. Copies of most of the reports and other technical publications are obtainable from the National Institute for Metallurgy, Private Bag X3015, Randburg, 2125 South Africa. For those reports that are out of print, photocopies can be supplied at a nominal charge. The papers and patents are not available from NIM: the papers can be consulted in the journals or books in which they were published, and the patents are obtainable from the Patent Office. 25 Southampton Buildings, London WC2A 1AY, England. The publications that have been included since the last issue of this list (Report 1970) are marked •. M NIM PUBLICATIONS Programme No. 001 Fundamental metallurgical studies of ferro-alloy processes and the application of results to operating plants I. Reports So. Tide Year 429 The determination of chromium in chromite 196H 511 The determination of silica in chrome ores and chrome refractories 1969 853 The determination of silicon in ferrochrome alloys 197») 952 The analysis of ferroehrome slag 1970 1020 Phase relationships involving iron, chromium, silicon, and carbon, with special reference to high-carbon ferrochromium and ferrochromium-silicide alloys. A literature survey 1970 1343 The Pyrometallurgical Research Group's current research programme on ferro-alloys 1971 1365 Studies of incipient fusion in the system chromite-MgO-AljO-SiOj-C 1972 1366 Liquidus temperatures, viscosities, and electrical conductivities of lime-containing slags produced during the smelting of high-carbon ferrochromium and ferroehromium-silicide alloys 1971 1394 The determination of ferrous iron in chromites and chromium ores 1972 1423 The effects of chromium oxide, iron oxide, and calcium oxide on the liquidus temperatures, viscosities, and electrical conductivities of slags in the system MgO-AI.O-SiO. 1972 1457 Phase equilibria in the Cr-Fe-Si-l' system in the composition range representative of high-carbon ferrochromium alloys produced in South Africa 1972 1458 l.iquidus temperatures in the Cr-Fe Si system in the composition range representative of ferrochromium-silicide alloys produced in South Africa 1972 1463 l.iquidus temperatures and activities of manganesedh oxide in slags associated with the production of high-carbon ferromanganese alloys 1972 1482 Reactions occurring during the smelting of high-carbon ferrochromium trom Transvaal chromite ores 1973 1547 PhyMcochemical and thermodynamic properties of slags in the system MgO-AlO, ,-SiO.. 1973 1548 Physicochemical properties of slags in the system MgO-AI O rSiO. and their application to the technology of ferro-alloy smelting 1973 1549 Thermodynamic and related physicochemical factors pertaining to the production of ferromanganese. A literature survey 1973 1606 The electrical- esistance characteristics of the charge in the electric reduction furnace 1974 NIM PUBLICATIONS No. Title Year 1622 The electric conductivity of the charge in a ferrosilicon furnace 1974 1681 The determination of sulphur and phosphorus in chromite 1975 1687 The viscosities and electrical conductivities of slags associated with the production of high-carbon ferTomanganese alloys 1975 1698 Measurement of the electrical resistance of ferTochromium furnace charges 1975 1707 The work of the Pyrometalh'rgy Research Group at the University of the Witwatersrand 1975 1770 The spectrophotometric determination of vanadium in chromium-bearing materials 1975 1790 The rapid determination of manganese, vanadium, and aluminium by instrumental neutron-activation analysis 1976 1791 A motivation for a pyrometallurgical pilot plant 1976 1833 Effective thermal conductivities of packed beds of chromite ores 1976 1868 The reduction of fluxed and non-fluxed manganese ores by ferTomanganese silicide 1977 1879 Alkalis in the iron blast furnace 1977 1913 Trie mechanism and rate of reduction of Mamatwan manganese-ore fines by carbon 1977 1931 The equilibrium between the slag and the metal in the production of low-carbon ferromanganese 1977 1934 The spectrometric analysis of chromium-bearing materials with particular reference to ferrochromium slags and chromite ores 1977 1950 Factors affecting the carbon contents of alloys formed during the prereduction of chromite ores 1978 • 1957 Solid-state reduction, by graphite and carbon monoxide, of chromite from the Bushveld Complex 1978 • 1959 The slag-metal equilibrium and the activities of slag and metal components in the production of high-carbon ferromanganese 1978 • 1967 The movement of the burden in submerged-arc furnaces for the production of high-carbon ferromanganese 1978 •2005 The ^ectrometric analysis of manganese-hearing materials, with particular reference to ferromanganese slags and metals 1979 2. Papers BARCZA, N.A.. JOCHENS, PR., and HOWAT, D.D. The mechanism and kinetics of reduction of Transvaal chromite ores. 29th ELECTRIC FURNACE CONFERENCE PROCEEDINGS. Metallurgical Society of AIME. New York, AIME, 1972. vol. 29. pp. 88-93. i.s N1M PUBLICATIONS CHANNON, W.P., and SEE, J.B. The reduction of fluxed and non-fluxed manganese ores by ferromanganese silicide. J. S.Afr. Inst. Min. Metall., vol. 77, no. 8. COALE, R.D., WOLHUTER, C.W., JOCHENS, PR., and HOW AT, D.D. Cementitious properties of metallurgical slags. Chem. Concr. Res., vol. 3, no. 1. 1973. pp. 81-92. DE VILLIERS, J.P.R. The crystal structure of braunite with reference to its solid-solution behaviour. Amer. Mineralogist, vol. 60. 1975. pp. 1098-1104. GRIMSLEY, W.D., SEE, J.B., apd KING, R.P. The mechanism and rate of reduction of Mamatwan manganese-ore fines by carbon. J. S.Afr. Inst. Min. Metall., vol. 78, no. 3. Oct. 1977. pp. 51-62. JOHNSTON, G.H., JOCHENS. PR., and HOW AT. D.D. Physicochemical properties of slags in the system MgO-AI.,0:l-Si02 and their application to the technology of ferro-alloy smelting. INFACON 74. Glen, H. (ed.). Johannesburg. South African Institute of Mining and Metallurgy. 1975. pp. 217-225. OSSIN. D.I.. HOWAT, D.D.. and JOCHENS. PR. Liquidus temperatures, viscosities and electrical conductivities of lime-containing slags produced during the smelting of high-carbon ferrochromium and ferrochromium-silicide alloys. 29th ELECTRIC FURS ACE COSEERESCE PROCEEDINGS Metallurgical Society ofAl.ME. New York, AIME. 1972 vol 29. pp. 94-100. •RANKIN, W.J. Silica solubility and the activity of MnO in MnO- SiO, slags. Meiall. Trans., vol. 9B. 1978. pp. 726-728. •RANKIN. W.J., and BISWAS, A.K. The oxidation states of chromium in slag and chromium distribution in slag-meta! systems at 1600°C. Trans. Instn Min. Metal!., vol. C87. Mar. 1978. pp. C60-C7O. RANKIN, W.J., and SEE, J.B. The alkali problem in the blast furnace. Miner. Sci. Engng, vol. 9. no. 2. Apr. 1977. pp. 68-82. RENNIE, M.S.. HOWAT. D.D.. and JOCHENS, PR. The effect of chromium oxide, iron oxide and calcium oxide on the liquidus temperatures, viscosities, and electrical conductivities of slags in the system MgO-ALOrSiO,. J. S.Afr. Inst. Min. Metall, vol. 73. no. 1. Aug. 1972. pp. 1-9. SEE, J.B. The development of fundamental and applied research in the sphere of ferro-alloys in South Africa. FERROALEACONES. TECHNOLOG1A Y DISPONIBILIDAD. Instituto Latinoamericano del Fierro y el Acero. Santiago, Instituto, 1975. pp. TI-T19. (In Spanish.) URQUHART, R.C. The production of high-carbon ferrochromium in a submerged-arc furnace. Miner. Sci. Engng, vol. 4, no. 4. Oct. 1972. pp. 48-65. UROUHART, R.C., JOCHENS, PR., and HOWAT. D.D. A laboratory investigation of the smelting mechanisms associated with the production of high-carbon ferrochromium. INFACON 74. Glen, H. (ed.). Johannesburg, South African Institute of Mining and Metallurgy, 1975. pp. 195-205. WARREN, G.F., JOCHENS. P.R., and HOWAT. D.D. Liquidus temperatures and the activities of manganese(ll) oxide in slags associated with the production of high-carbon ferromanganese alloys. INFACON 74. Glen, H. led.). Johannesburg. South African Institute of Mining and Metallurgy, 1975. pp. 175-185. WETHMAR, J.C M.. HOWAT, D.D., and JOCHENS. PR. Phase equilibria in the Cr-Fe-Si-C system in the composition range representative of high-carbon ferrochromium alloys produced in South Africa. J. Metall. Sci., vol. 9. 1975. pp. 291-296. hfi NIM PUBLICATIONS WETHMAR. J.C.M.. HOWAT. D.D.. JOCHENS, PR., and STRYDOM. O.A.W. Liquidus temperatures in the Cr-Fe-Si system in the composition range representative oï ferrochromium-silicide produced in South Africa. J. S.Afr. Inst. Min. Meiall.. vol. 73. no. 6. Jan. 1973. pp. 181-183. WOOLLACOTT. L.C.. HOWAT. D.D.. and JOCHENS. PR. The viscosities and electrical conductivities of slags associated with the production of high-carbon ferromanganese alloys. INFACON 74. Glen, H. (ed.). Johannesburg, South African Institute of Mining and Metallurgy. 1975. pp. 227-232. YOUNG. M.L., and SEE, J.B. Effective thermal conductivities of packed beds of chromite ores. J. S.Afr. Inst. Min. Metall., vol. 77, no. 5. Dec. 1976. pp. 103-113. Programme No. 002 Development of new and improved ferro-alloy processes for the major ferro-alloys (ferrochromium, ferromanganese, ferrosilicon) I. Reports No. Title Year 378 A literature survey on the manufacture of ferrochrome 1968 447 Chemical beneficiation and agglomeration of low-grade chromite ores — a literature survey 1969 1247 The pelletizing of chromite fines. A preliminary investigation of the preparation of cold-bonded pellets 1971 1398 The pelletization of chromite fines. Preparation oi pellets bonded with bentonite and indurated by heat treatment 1971 1489 The breakage of Soderberg electrodes 1972 1499 The production of medium-carbon ferrochromium 1972 1513 The upgrading of chromite ore from Moreesburg 1973 1544 The recovery of salable ferrochromium from material discarded by Ferrometals Limited 1973 1650 The production of medium-carbon ferrochromium alloys by solid-state reduction 1974 1724 The preparation and reduction of chromite pellets containing a reducing agent 1975 1895 A review of applications of plasma technology with particular reference to ferro-alloy production 1977 1960 The recovery of ferrochromium furnace slags and related products 1976 2. Papers HAMBLYN, S.M.L. Plasma technology and its application to extractive metallurgy. Miner. Sci. Engng, vol. 9, no. 3. Jul. 1977. pp. 151-176. McRAE, L.B., and SELMER-OLSEN, S.S. An investigation into the pelletizing and prereduction of Transvaal chromitcs. AGGLOMERATION 77. Sasiry, K.V.S. (ed.). New York. AIME, 1977. vol. I. pp. 356-377. h7 NIM PUBLICATIONS J. Patent The production of ferrochromium alloys. S.Afr. Pat. 72/6389. 19th Mar.. 1974. Programme No. 003 Instrumentation, optimization, and control of ferro-alloy processes I. Reports No. Title Year 1818 A microprocessor-based system to control the feed to a ferro-alloy furnace 1976 •2007 The instrumentation and computerization of a 25 MV-A submerged-arc furnace 1977 2. Papers RODD, M.G., and POTGIETER, J.H. A microprocessor based weighing and feed control system. AUTOMATION IN MINING, MINERAL AND METAL PROCESSING. Lancaster, F.H ted.). Pretoria. South African Council for Automation and Computation, 1977. pp. 381-388. RODD, M.G., and RABEY, C.C. A computer based system for the evaluation of electric fields in a model submerged arc furnace. AUTOMATION IN MINING. MINERAL AND METAL PROCESSING. Lancaster, F.H. (ed.). Pretoria, South African Council for Automation and Computation. 1977. pp. 371-379. STEWART. A.B., ixd MARTIN. P.D. The impiementation of data logging and raw-material feed control on a submerged-arc furnace. AUTOMATION IN MINING, MINERAL AND METAL PROCESSING. Lancaster, F.H. (ed.). Pretoria. South African Council for Automation and Computation, 1977. pp. 583-588. Programme No. 004 Research and development of stainless-steel processes I. Report No. Title Year 1899 The production of stainless steel in South Africa 1977 2. Paper •OSSIN. D. The production of stainless steel in South Africa. Miner. Sci. Engn/{, vol. 10. no. 2. Apr. 1978. pp. 101-129. .?. Patent Stainless steel production. S.Afr. Pat. 75/7930. 18th Nov., 1976. (Also: Rhod. Pal. 285/76. 13th Dec, 1976.) w* i I NIM PUBLICATIONS Programme No. 005 Research associated with conventional processes for the production of iron and steel 1. Report \o. Title Year 1425 The effect of the reactivitv of lime on des jlphurization efficier.cy in the basic oxygen furnace ' ' 1^72 2. Papers HEJJA. A.A.. HOWAT. D.D.. and JOCHENS. PR. The effect of the reactivity of lime on desulphurization efficiencv in the basic oxvgen furnace. J. S.Afr. Inst. Min. Metall.. vol. 73. no. 8. Mar. 1973. pp. 249-257. McNALLAN. M.J . SEE. J.B.. OBERTEUFFER. J.A.. and RUSSELL. K.C. Treatment of steelplant effluents by high gradient magnetic separation. Iron Steel Engr. vol. 53. no. 1. 1976. pp. 4 Programme No. 006 Research and development of processes for minor ferro-alloys I. Report So. Title Year 1777 Ferro-alloys in Brazil 1976 Programme No. 008 Properties of carbonaceous reducing agents with special reference to ferro-alloy processes I. Reports No. Title Year 1566 Comparative tests on coke. char, and anthracite 1973 1708 An examination of the suitability of various reducing agents for the production of ferrochromium 1975 • 1968 The influence of carbonaceous reducing agents on the rate of reduction of representative manganese and chromium ores 1978 • 1969 The interaction of silicon monoxide gas with carbonaceous reducing agents 1978 • 1975 Reactions in the production of high-carbon ferromanganese from Mamatwan ore 1978 • 1982 The resistivity of mixtures of Mamatwan manganese ore and reducing agents 1978 • 1997 A laboratory investigation of reducing agents for use in the electric-smelling industry 1979 M NIM PUBLICATIONS 2. Papers •KOURSARIS. A., and SEE, J.B. Reactions in the production of high-carhon ferromanganese from Mamatwan ore. J. S.Afr. Inst. Wi«. Metall.. vol. 79. no. 6. Jan. 1979. pp. 149-158. •PAULL. J.M.. and SEE. J.B. The interaction of silicon monoxide gas with carbonaceous reducing agents. / S.Afr. Inst. Min. Metall., vol. 79. no. 2. Sep. 1978 pp 35-41. STANKO. J.S.. and JOCHENS, PR. Ferro-alloy industry looks to hig coal supply Coal. Gold base Miner., vol. 23. no. 4. Jul. 1975. pp. 51. 55. 57. 58. 63. 64. Programme No. 010 Development of processes for the production of manganese metal I. Report No. Title Year 1859 Increased current efficiency during electrodeposition of manganese from sulphate electrolytes 1976 Programme No. 050 Development of processes for the concentration of base metals, especially copper, zinc, lead, and nickel, by ore-dressing techniques with special reference to mixed sulphides I. Reports So. Title Year 159 A radioactive-tracer technique for the study of the flotation of valleriite 1967 218 Exploratory comminution and flotation tests to indicate some characteristics of valleriite 1967 1268 A two-stage process for the recovery of flotation concentrates from copper-zinc ores 1971 1374 Flotation tests on copper-zinc ore from the Letaba district 1971 1384 Flotation tests on samples of Canadian copper-zinc ores 1971 1388 Flotation tests on samples of copper-zinc ores from Finland 1971 1587 A preliminary investigation of the flotation of copper-activated sphalerite without the use of collectors 1973 1597 The role of sulphur in the flotation of sulphide minerals 1974 1613 The deactivation of copper-activated sphalerite with cyanide 1974 1721 A preliminary investigation into the mechanism of depression in the flotation of sulphide minerals 1975 7(1 NIM PUBLICATIONS So. Title Year 1785 Some thermodynamic aspects of systems relevant to the flotation of sphalerite 1976 • 187| Batch and pilot-plant flotation tests on copper-nickel ore from the Uitkomst ore-body i**7f> • 1953 A fundamental investigation into the depression of copper-activated sphalerite 1978 2. Paper, ALLISON. S.A.. HARRIS. PL and MARSICANO. K Depression and deactivation of sphalerite J. S.Afr. Inst. Min. Metali. vol. 76. spec, issue. Oct. 1975. pp. 123-124. BUSHEL!.. LA., and VF.ITCH. ML. The influence of chemical environment during milling on the flotation of zinc from complex sulphide ores. J. S.Afr. Inst. Min. Metall.. vol. 76. spec, issue. Oct. 1975. pp. 143-145. FINKELSTEIN.N.P. and ALLISON. S A The chemistry of activation, deactivation and depression in the flotation of zinc sulphide: a review. FLOTATIOS. AM GAUDIS MEMORIAL VOLUME Fuerstenau, M.C. (ed). vol. 1. New York. American Instttute of Mining. Metallurgical and Petroleum Engineers. Inc., 1976. pp. 414-457. Programme No. 051 Development of hydrometallurgical processes for base metals, especially copper, nickel, and cobalt, including non-sulphidic raw materials I. Reports No. Title Year 28 Exploratory tests on the dissolution of manganese dioxide by reaction with sulphuric acid and a metallic sulphide 1966 81 The solvent extraction of copper cyanide 1966 84 Leaching tests on the copper sulphide mineral valleriite from Palabora Mining Company —a preliminary re(. .t 1966 154 The leaching of various copper minerals with dilute sodium cyanide and dilute solutions containing sulphuric acid and ferric ions 1967 155 The quantitative estimation of valleriite in the presence of other copper minerals 1967 157 Results of tests to obtain pure valleriite 1967 172 The solvent extraction of Clipper cyanide 1967 175 Copper extraction by leaching magnetites from Palabora Mining Company 1967 435 The liquid-liquid extraction of ferric thiocyanate complexes with Versatic 91 I 1968 71 N1M PUBLICATIONS No. Title Year 847 The liquid-liquid extraction of ferric thiocyanate complexes with carboxylic acids 1969 938 Life test on IRA 400 resin during the recovery of zinc chloride 1970 964 The recovery of copper from sulphate leach liquors bv liquid ion exchange with LIX-64N ' 1970 1078 The complexometric determination of zinc in ores and concentrates, with ion-exchange resin 1970 1085 The optimization of the design of a countercurrent liquid-liquid-extraction plant using LIX-64N 1970 1158 The production of ferric sulphate and sulphuric acid by the autoxidation process using the Fring's aerator 1970 1222 The liquid-liquid extraction of zinc from zinc chloride solutions by the use of di-2-ethyl hexyl phosphoric acid 1971 1575 The recovery of zinc from pickle liquors by ion exchange 1973 1630 An electrochemical investigation of the dissolution of copper, nickel, and copper-nickel alloys in ammonium carbonate solutions 1974 1685 The METSEP Process for the separation and recovery of zinc. iron, and hydrochloric- acid from spent pickle liquors 1974 1693 Research at the National Institute for Metallurgy on the engineering aspects of copper elcctrowinning 1975 1711 The oxidation of aqueous solutions of ferrous sulphate in a bubble column 1975 1720 The initial development of processes for the direct leaching of iron-nickel-copper mattes containing platinum-group metals ;>nd lor the production of ferronickel 1975 1769 An evaluation of the low-pressure ammonia-ammonium sulphate system for the leaching of local base-metal sulphides 1976 1772 A study of copper recovery by the lime-roast leach process 1975 1776 The extraction of copper from copper-nickel catholyte by ion exchange 1975 1793 The kinetics of mechanism o; solvent extraction of copper by I.IX 64N and KEI.EX 100 1976 1796 The mechanism of the elc'trodcposition and dissolution of nickel from chloride media 1976 1799 An electrochemical investigation of copper cementation on iron 1976 1804 The electrodeposition of nickel from ammoniacal solutions 1976 1820 The thermodynamics of the formation of chlorocomplcxcs of ironmi). cobaltdi). mangancsc(ll). and coppcrdl) in perchloratc medium 1976 7: N1M PUBLICATIONS Xo. Title Year I858 The kinetics and mechanism of the non-oxidativc dissolution of some iron sulphides in aqueous acidic solutions 1976 1878 The electrochemical dissolution of galena in aqueous solutions 1977 2. Papers COLBORN. R.P.. and NICOL. M.J. An investigation into the kinetics and mechanism of the oxidation of iron(ii) by oxygen in aqueous chloride solutions./. S.Afr. Inst. Min. Metall.. vol. 73, no. 9. Apr. 1975. pp. 281-289. •FLEMING. C.A.. and MONHEMIUS. A.J. On the extraction of various base metal chlorides from polar organic solvents into cation and anion exchange resins. Hydrometallurgy. vol. 4. no. 2. Mar. 1979. pp. 159-167. HAINES. A.K.. TUNLEY. T.H.. TE RIELE. W. A.M.. CLOETE. F.L.D.. and SAMPSON. T.D The recovery of zinc from pickle liquors by ion exchange. J. S.Afr. Inst. Min. Metall., vol. 74. no. 4. Nov. 1973. pp. 149-157. NICOL, M.J. An electrochemical investigation of the dissolution of copper, nickel, and copper-nickel alloys in ammonium carbonate solution-. J. S.Afr. Inst. Min. Metall., vol. 75, no. II. Jun. 1975. pp. 291-302. NICOL. M.J. Mechanism of aqueous reduction of chalcopyrite by copper, iron and lead. Trans. Instn Min. Metall., vol. 84. 1975. pp. C206-C209. •NICOL, M.J., PAUL. R.L.. and DIGGLE. J.W. The electrochemical behaviour of galena (lead sulphide)— II. Cathodic reduction. Electrochim. Acta, vol. 23. 1978. pp. 635-639. •PAUL. R.L.. NICOL. M.J.. DIGGLE. J.W.. and SAUNDERS. A.P. The electrochemical behaviour of galena (lead sulphi 'e) — I. Anodic dissolution. Electrttehim. Acta, vol. 23. 1978. pp. 625-633. PA YNTER. J.C. A review of copper hydrometallurgy. J. S.Afr. Inst. Min. Metall., vol. 74. no. 4. Nov. 1973. pp. 158-170 PHILIP, H.I.. and NICOL. M.J. Underpotcntial deposition and its relation to the anomalous deposition of metals in alloys. J. eleitroanalyt. Chem., vol. 70. 1976. pp. 233-237. PHILIP, H.I.. and NICOL. M.J. The kinetics and mechanism of the deposition of nickel from chloride solutions. INTERNATIONAL SYMPOSIUM ON CHLORIDE HYDROMETALLVRGY, PROCEEDINGS. Brussels. Benelux Metallurgie. 1977. pp. 250-269. TUNLEY. T.H.. KOHLER. P.. and SAMPSON. T.f). The METSEP Process for the separation and recovery of/inc. iron, and hydrochloric acid from spent pickle liquors. J. S.Afr. Inst. Min. Metall., vol. 76. no. 10. May 1976. pp. 423-427. WARSHAWSKY. A. The liquid-liquid extraction of nickel: a review. Miner. Sci. Engng, vol. 5.no. I Jan. 1973. pp. 36-52. WARSHAWSKY. A Solvent-impregnated resins in hydromctallurgical applications. Trans. Instn Min. Metali, vol. 83. no 811. Jun. 1974 pp. CI0I-CI04. 7.1 MM PUBLICATIONS J. Patents Extraction of copper. S.Afr. Pat. 67/2097. 3rd Apr.. 1968. (Also: Can. Pal. 858.472. 8th Apr.. 1968: Chile Pat. 25.464. 30th Apr.. 1968: Congo Rep. Pat. 833/A. 16th Apr.. 1968: Rhodes. Pat. 133/68/58. 5th Apr.. 1968: S.W Afr. Pat. P.68/041. 5th Apr.. 1968; Zamb. Pat. Z.31,68. 5th Apr.. 1968.) Chloride solutions containing mixed metal chlorides. S.Afr. Pat. 70/8558. 8th Dec. 1970. (Also: Austral. Pat. 36715/71. 10th Feb.. 1971; Belg. Pat. 776.912. 17th Dec. 1971. Brit. Pat. 1.343.626. 16th Dec. 1971: Can. Pat. 955.067. 17th Dec. 1971: Fr. Pat 71.45534. 17th Dec. 1971; /w/. Pat. 945.473. 16th Dec. 1971; Luxembourg Pat 64.447. 13th Dec. 1971; .S.W. Afr. Pat. 71/0130. 8th Dec. 1971.) Equipmi .it for contacting liquids and solids. S.Afr. Pat. 72/4328. 20th Jun.. 1973. (Also: .V. W. Afr. Pal. 73/064. 20th Jun.. 1973?) 4. Other technical publications Continuous ion exchange in hydrometallurgy. Technical Bulletin no. I. 1976. 16 pp. [supersede*.! b\ Technical Bulletin no. 2.) •The NIMC1X contactor. Continuous ion exchange in hydrometallurgv. Technical Bulletin no. 2. Aug. 1978.10 pp. Programme No. 053 Pyrometallurgical processes for the smelting and refining of copper and nickel I. Reports No. Title Year 1484 Cost estimates for the production of copper wirebars from sulphide ores 1972 1491 Technology and economics of the Claus kiln under South African conditions 1972 1527 The physicochemical properties of slags associated with the smelting of nickel sulphide concentrates 1973 1628 The recovery of non-ferrous metals from a secondary blast-furnace slag 1974 1664 The smelting of copper-nickel concentrates in an electric furnace 1974 1888 The Imperial Smelting Process and its application to the smelting of complex zinc-lead-copper ores 1977 1952 The effect of slag composition on copper losses to silica-saturated iron silicate slags I 978 2. Papers URUUHART. R.C.. RHNNIE. M.S.. and RABEY. C.C. The smelting of copper-nickel concentrates in an electric furnace. THF. EXTRACTIVE METALLURGY OF COPPER Yannopoulos, Y.. and Agarwal. J. (eds.). New York. AIME. 1976. vol. pp. 274-295. •ELLIOT. B.J.. SEE. J.B.. and RANKIN. W.J. Effect of slag composition on copper losses to silica-saiuratcd iron silicate slags. Trans. Itisin Min. Metall., vol. 87. Sep. 1978. pp. C204-C2I I. 74 N1M PUBLICATIONS Programme No. 055 Development of hydrometallurgical processes for the recovery of zinc I. Report* So. Title Year 1782 The application of air-sparging techniques to industrial electrodeposition of zinc from acidic zinc sulphate solutions 1976 1949 The kinetics of the leaching of zinc sulphide concentrates in acidic solutions containing ferric sulphate 1978 .?. Patents Chloride solutions containing mixed metal chlorides. S.Afr. Pat. 70/8558, 8th Dec, 1970. (Also: Austral. Pat. 36715/71, 10th Feb.. 1971: Bety. Pat. 776.912. 17th Dec, 1971: Brit. Pat. 1.343.626. 16th Dec, 1971: Can. Pat. 955.067. 17th Dec. 197I:f>. Pal. 71.45534. 17th Dec. 1971: Ital. Pat. 945.473. 16th Dec. 1971; Luxembourg Pat. 64.447. 13th Dec, 1971; S.W. Afr. Pal. 71/0130, 8th Dec, 1971.) Recovery of zinc S.Afr. Pat. 71/0048, 28th Dec, 1971. Programme No. 056 Processing of nickel-bearing serpentinites with special reference to their occurrence in South Africa I. Reports ,Vo. Title Year 86 The investigation of six samples of serpentinite from the Barberton area 1966 88 Quantitative electron-microprobe investigation of the distribution of nickel in serpentinites and associated minerals and rocks from the Barberton area 1966 179 The nickel distribution in weathered serpentinites from Volspruit, Potgietersrus 1967 180 The distribution of nickel in a rock sample from the Louis Moore Mine, northern Transvaal 1967 291 Nickel minerals from Barberton. South Africa. I. Ferroan trevorite 1968 344 Nickel minerals from Barberton: II. Nimite. a nickelian chlorite 1968 352 Nickel minerals from Barberton: III. Willemseite, a nickelian talc 1968 428 Nickel minerals from Barberton, South Africa: IV. Reevesite, a member of the hydrotalcite group 1968 508 The distribution of nickel in serpentinite samples of borehole cores from the Msauli Mine. Barberton 1969 7< MM PUBLICATIONS \<». Title Year 512 The distribution of nickel in two surface samples of serpcntinite lli(-<9 536 The distribution of nickel in Itmonite-bearing hirbirite and gossan from Vlakfontein and Groenfontein in the western Transvaal |9d9 845 An electron-microprobe study of the nickel distribution in a serpentinite from Volspruit, Potgietersrus 19^9 848 The distribution of nickel in serpentinite from Lusinzi. north-eastern Transvaal 19fi9 897 Nickel in South Africa with special reference to low-grade nickeliferous ores 1970 1319 Nickel minerals from Barberton. V. Trevorite 1971 135fi Nickel in samples of serpentinite from Kaapsehoop. Barberton 1971 1732 A mineralogical examination of eight nickel-bearing rocks from the Grasvally Chromite Mine lg75 2. Papers DE WAAL, S.A. On the origin of hvdrogrossularite and other calcium silicates in serpentinites. Irans. Geol. Sue. S.Afr.. vol 72. pt 1. Jan-Mar I9h9. pp. 23-27. DE WAAL. S.A. Nickel minerals from Barberton. South Africa: I Eerroan trevorite Am. Mineralogist, vol. 54. no. 7.S. Jul. Aug. 1969. pp I2(U-I2()S. 1)1; WAAL. S.A. Nickel mineralsfrom Barberton. South Africa: II V"iitc. a nickel-rich chlorite. \m. Mineralogist, vol. 55. no. 12. Jan-Teh. |97|). pp. IN-30. DE WAAL. S.A. Nickel minerals from Barberton. Souili Africa: 111. W illcmscite. .: nukel-iich talc. Am. Mineralogist, vol. 55. no. 1,2. Jan. Tcb. 197(1. pp. 31 42 DEWAAL. S.A South African nickcliferous serpentinites Miner St i. I /ic'/c. vol. v no 2 Apr !1>~1 pp. 32-45. DL WAAL. S.A. Nickel minerals from Barberton. South Alrica: \' I reunite ledcscrtbed. Am Mineralogist, vol. 57. no. 910. Sep.Oct. 19?:. pp i.s;4 152". • DE WAAL. S.A. The nickel deposit at Bon Accord. Barberton. South Africa a proposed paleometeonte. Mineralization in metamorphic terranes. Johannesburg. Geological So.iets ol South Africa. Spec. Pub 4. 1978. pp. 87-98. •DE WAAL. S.A. Nickel minerals from Barberton. South Africa: VIII I he spinels cochromitc and nichromite and their s:i>nificance to the Bon Accord nickel deposit Hull. li.K.G.M., Section II. no 3. 1978. pp. 225-230. DE WAAl .V. A., and CALK. I..C Nickel minerals! rom Barberton. South Africa: VI I icbenbcrgite. a nickel olivine. Am. Mineralogist, vol. 58. no 7 8. Jul. Aug. 1973. pp. 733 735 DE WAAL. S.A..and VILJOEN. E.A. Nickel minerals from Barberton. South Africa: IV. Rcevesite.a member of the hydrolakite group ,4»i. .W/mw/dyiw, uil. 5d. no. 5,h. Mnj Jim. 1971 pp. 1077 1118 I DE WAAL. S.A.. VII.JOEN. E.A.. and CALK. EC Nickel minerals from Barberton. South Alrica. VII. Bonaccordite. the nickel analoeii' of ludwigite. Irons, (ieol. Si». S.Afr., vol 77. pt 3. Sep. Dec. 1974. p. 175. 7h NIM PUBLICATIONS Programme No. 057 Development of new and improved methods for analysis of ba*e-metal sulphide ores, concentrates, metals, and byproducts I. Reports So. Title Year 29 The determination of selenium and tellurium in silver chloride 1966 244 The determination of selenium and tellurium in silver chloride and uranium compounds 1967 491 The determination of nicke!. copper, and cobalt in a nickel alloy matte 1969 857 The volumetric determination of bismuth in metallurgical ores and concentrates 1969 1230 The determination of copper and zinc in borehole cores with the Ekco Mineral Analyser 1971 1430 The use of the Ekco Mineral Analyser for the determination of copper and zinc in the presence of iron 1972 1435 The determination of chromium, manganese, iron, cobalt, and nickel by atomic-absorption spectrophotometry using the nitrous oxide-acetylene flame 1972 1688 The analysis of nickel-refining solutions: separation of trace elements by liquid-liquid extraction followed by atomic-absorption measurement 1974 1689 The determination, by atomic-absorption spectrophotometry, of arsenic, selenium, tellurium, antimony, and bismuth on ion-exchange resins 1974 1718 The determination of silver in lead, copper, and zinc concentrates by instrumental neutron-activation analysis 1975 1736 The determination, by atomic-absorption spectrophotometry and liquid-liquid extraction, of antimony (parts per million) in ores and concentrates 1975 1746 The determination of minor elements in zinc, lead, and copper sulphide concentrates by atomic-absorption spectrophotometry l'>75 1783 The spectrographic determination of minor and trace elements in copper, lead, and zinc concentrates 1976 1787 The determination, by atomic-absorption spectrophotometry, of trace elements in sulphide concentrates 1976 1792 The determination, by instrumental neutron-activation analysis, of some trace elements in sulphide ores and concentrates 1976 1794 The application of three-phase liquid-liquid extraction to the analysis of bismuth and tellurium in sulphide concentrates 1976 1797 A rapid atomic-absorption method for the determination of silver in sulphide ores and concentrates 1976 77 NIM PUBLICATIONS No. Title Year 1798 Interferences in the determination, by atomic-absorption spectrophotometry, of copper, lead, and zinc in sulphide concentrates 1976 1815 The commissioning of an induction-coupled plasma system and its application to i.it- analysis of copper, lead, and zinc concentrates 1976 1836 The analysis of pilot-Dlant products for copper, zinc, and lead with the Telsec Lab-X-250 Analyser ' 1977 1838 An investigation of the atomic-absorption spectrophotometric measurement of the elements that form gaseous hydrides and their determin ;tion in metal sulphide concentrates 1976 1857 The determination of some trace elements in sulphide concentrates by spectrophotometry 1977 1869 The separation and determination of trace elements in iron ore 1977 1872 The determination of mercury by cold-vapour atomic-absoiption spectrometry 1977 1883 The determination of iron, chromium, titanium, and tungsten in ores and other materials, by X-ray-fluorescence spectrometry 1977 1911 Methods for the analysis of zinc-bearing materials, electrolytes, and process solutions 1977 • 1926 The analysis of anode sludges by X-ray-fluorescence spectrometry 1978 1932 A basic computer programme for the evaluation of intensity data from the Telstc Lab-X-250 Analyser ' 1978 • 1963 An evaluation of the methods used at the National Institute for Metallurgy for the analysis of base-metal sulphide concentrates 1978 2. Paper BIBBY, D.M., and SELLSCHOP. J.P.F. Determination of copper, zinc, iron, and silicon in copper/zinc ore flotation products by fast neutrons. Radiochem. radioanalyi. Leti.,\v\. 12.no.4-5.1972.pp. 245-257. Programme No. 058 Mineralogies! studies of base-metal sulphides from the north-western Cape I. Report No. Title Year • 1962 Supcrgene alteration of sulphide ores. I. Literature survey, measurement, and effect on floatability and leachabilily 1978 78 N1M PUBLICATIONS Programme No. 100 Development of improved ore-dressing processes for the recovery of gold and pyrite from Witwatersrand and O.F.S. gold mines /. Reports No. Title Year 140 A preliminary mineralogical investigation of pyrite from the Kimherley and the Main Reefs, Vogelstruisbult Gold Mine 1967 219 A review of some of the mineralogical factors influencing the flotation of pyrite 1967 316 The flotation of pyrite from siliceous gangue by cationic collectors. A literature survey 1968 430 A mineralogical investigation of pyrite from the Loraine Gold Mine, Orange Free State 1968 1747 Magnetohydrostatic separation of gold from gravity concentrates 1975 1823 The recovery of gold and pyrite from a residue dump at Crown Mines 1976 1845 The composition and mode of occurrence of gold in Witwatersrand ores and leach residues 1976 2. Papers •CORRANS. I.J., and LEVIN. J. Wet high-intensity magnetic separation for the concentration of Witwatersrand gold-uranium ores and residues./. S.Afr. Inst. Min. Metall.. vol. 79. no. 8. Mar. I 9""9. pp. 210-228. GUEST. R.N. The recovery of pyrite from Witwatersrand gold ores. J.S.Afr.Inst. Min. Metall., vol .76. spec, issue. Oct. 1975. pp. 103-105. LEVIN. J., and VEITCH. M.L. Laboratory tests on the flotation of pyrite from Witwatersrand gold ores by cationic collectors. J. S.Afr. Inst. Min. Metall., vol. 70, no. 6. pt 2. Jan. 1970. pp. 259-275. LOUW. G.D.. and LAXEN. PA. The beneficiation of residue at Blyvooruitzicht Gold Mine. J. S.Afr. Inst. Min. Metall., vol. 76. spec, issue. Oct. 1975. pp. 136-139. UKEN. E-A.. WATTERSON. J.W.. KNIGHT. A., and STEELE. T.W. The application of neutron activation analysis to sorting Witwatersrand goid-bearing ores. /. S.Afr. Inst. Min. Metall., vol. 67. no. 3. Oct. 1966. pp. 99-114. Programme No. 101 Development of improved hydrometallurgical extraction processes for gold from Witwatersrand and O.F.S. gold mines I. Reports No. Title Year 2 The dissolution of gold in cyanide solutions containing copper in a carbonate/bicarbonate medium. Preliminary results 1966 7D I N1M PUBLICATIONS 14 A comparison of the effects of additions of carbonate/bicarbonate as opposed to additions of lime in the leaching of a Blyvooruit/icht gold ore 1\)f>6 20 The determination of small amounts of gold in barren cyanide solution by atomic-absorption spectrophotometry 1 966 24 Determination of gold in barren cyanide solution by atomic-absorption spectrophotometry Ii>tlh 27 Spectrophotometric determination of gold in cyanide solutions alter solvent extraction as the bromo-aurate complex 11>66 3? The determination of gold in ores and solutions by neutron-activation analysis 1966 133 Gold recovery by cyanidation from mill products obtained after pyrite flotation. Progress made up to 1st July. I9h7 I1»'1? 139 A preliminary survey of gold-recovery problems arising in the production ot pynte l1"'^ Ift5 Gold recovery from pyrite flotation mill products by cyanidation. Progress made up to 1st May. 1967 ll'f7 241 Investigation of the effects of sulphydryl notation reagents on the cyanidation of native gold I1»"7 277 The determination of small quantities of xanthatc in cyanide solution 1968 278 Gold recovery by eyanidation from mill products obtained after pyrite notation 1968 281 The determination of xanthate in cyanide solutions 1968 306 The effect of preaeration on two samples of thickener underflow from the Venterspost Gold Mine 1 968 308 A mineralogical study ofgold particles in pulp residues from the H racket! Gold Mine I 968 3 I 7 Results of tests carried out at the l.orainc Gold Mine during the period 5th to ~th February. 1968 1968 321 Aeration of ore from the I.online Gold Mine before the addition of cyanide 1968 348 The determination of gold ;ind silver in pynte and banket by atomic-absorption 96* 323 spectrophotometrTheeolorimetric determinatioy n of cyanide in solution from gold cyanidation plants I 968 360 The determination of the alkali carbonates and hydroxides or carbonates and bicarbonates in the presence of permanganate ions 1'"'8 377 examination of pulp samples, treated with cyanide, for coated gold I'"'8 37V The inhibition of the rate of cyanidation ol native gold by Aeromine '037 I 96,s 385 The determination of the nature of coalings on gold particles 1968 NIM PUBLICATIONS No. Title Year 513 Gold recovery by cyanidation from mill products obtained after pyrite flotation 1969 515 The influence of sulphydryl and cationic flotation reagents on the cyanidation of native gold 1969 1545 A mineralogical investigation of leach residues from the Blyvooruitzicht Gold Mine 1973 1768 Some developments in gold extraction from Witwatersrand ore 1975 1845 The composition and mode of occurrence of gold in Witwatersrand ores and leach residues 1976 2. Papers ASHURST. KG., and FINKELSTEIN. N.P. The influence of sulphydryl and catinnic flotation reagents on the cyanidation of native gold. J. S.Afr. Inst. Mm Meiall.. vol. 70. no. 6. pt 2. Jan. I 970. pp. 248-256. fINKELSTFIN. N.P. The chemistry of the extraction of gold from its ores GOLD METALLURGY IS SOUTH AFRICA. Adamson. R.J. (ed.). Johannesburg. Chamber of Mines of South Africa. 1972. pp. 2S4-35I. FINKELSTFIN. N.P.. and HANCOCK. R.D A new approach to the chemistry of gold. Gold Bull., vol. 7. no. 3. J.-l. 1974. pp. 72-77. HAINF.S. A.K.. EDWARDS. R.I.. and IF RIFLE. W.AM. The separation of told from acidic leach liquors with Amberlite XAD-7. THE THEORY AM) PRACTICE ()E ION EXCHANGE M ALLFTT. R.C. A review of techniques for the determination of gold and silver by atomic-absorption spectroscopy. Miner. Sci. Elngng, vol. 2. no. 3. Jul. 1970. pp. 28-37. MRKUSIC. P.O.. SCIARONE. M.. and SIMONSEN. HE. Gold recovery by cyanidation from mill products obtained after pyrite flotation. J. S.Afr. Inst. Min. Metall., vol. 70. no. 6. pt 2. Jan. 1970. pp. 236-247. UKFN. E-A.. WATTFRSON. J.I.W.. KNIGHT. A., and SFLLSCHOP. J.P.F. The determination of gold in ores and solutions by activation analysis with a neutron generator. Int. J. appl. Rad. Isotopes, vol. 19. 1969. pp. 615-623. .?. Patents Recovery and separation of platinum group metals and gold. S.Afr. Pat. 71/4981. 21st Jul.. 1972. Separation and purification of platinum group metals and gold. S.Afr. Pat. 72/0308. 20th Jun.. 1973. (Also: Brit. Pal. 1,4 I 8.391, 2nd Jan.. 1973; Er. Pal. 73.01418. 16th Jan.. 1973; Hal. Pal. 976.937. 17th Jan.. 1973; 'ihodes. Pat. 521/72, 27th Dec. 1972; S.W. Afr. Pat. 73/084. 20th Aug.. 1973; W Ger. Pal. P23 02 150.3. 17th Jan.. 1973.) The separation of platinum group metals and gold. S.Afr. Pal. 74/5109. 23rd Jul.. 1975. (Also: Bel/(. Pal. 832.216. 7th Aug.. 1975; Er. Pat. 75 24681. 7th Aug.. 1975; Norw. Pal. 752779.8th Aug.. 1975; U.S. Pal. 3.985.552. 1st Aug.. 1975.) A process for the treatment of mixtures of platinum group metals and gold. S.Afr. Pal. 75/0593. 21st Jan.. 1976. (Also: Bety. Pat. 838.029. 29th Jan.. 1976; Er. Pat. 76.02279. 28th Jan.. 1976.) HI MM PI Bl KM IONS Programme No. 102 Instrumentation, optimization, and control of processes for the recovery of gold 1. Reports So. ïiilt' Year 120') The economics of it stri'tncntation for the cumulation of gold I''71 1 1647 Thc industrial application of MiGOI.D electrodes 1 »"4 2. Paper FLFTCMFR. G.W Process control. HOLD ML/ M.I.I ROY IS SOI 77/ MRU \ Adams,,,,. K.J. ted.). Johannesburg. Chamber of Mines of South Africa. I''72. pp. 256--2S.V Programme No. 103 Mineralogical and geochemica! studies of gold ores 1. Reports So. I ill,- Ycir I0l F.leetron-microprohe identification of <>p.u|iic minerals in cold ore from the Bavd Reef. Free State Gcduld Mine ' 1'»''' 26') A literature survcv ot the vertical distribution of cold arid urai.uim m various auriferous reefs 1l'6S M7 The association of cold and uranium with oihet minerals in d liferent V\ itwalersr.iiivl reefs ' I l>6;> I .16 I An electron-microprobe analvsis of cold m ihe \»'iiv\atcrsr.ind b.inkct and r> ores from the Barherton Mountain Land i''~i 1845 The composition ,ind mode o! occurrence ol cold in Witwatersrainl ores and le.n'h residues l''^> ll>24 The composition of chromitc grains from >,,uioti- Wiiuatcrsraint rets I'' 2. Papers DHWAAI S A . andHFR/Bf KG. VV ( ranium and gold minerali/ation of the Black Reef Sciirsin the Kaapse Hoop area. Nclspruit District, eastern fransvaal Annah Cnnl. Sn< S.AIr . vol 7. ! •»'>,S f>1' pp II1-124. I.IFBFNBf RG. W R Mmeialogieal features of gold ores m South Africa (,(>l D \U I Al I I !<(,) I\ SOI III MKIi A A(lti»t\(»t, R I l,;l). .lohanncsburi;. Chamber ot Mines of South Africa. I<>72 pp .152 446 MIMAI.IK. V . and SAAGI R. R. Chron'ilc giains showing altered hordes from the B.is;il Reel. Witwatersraml System. Am. Minrr,iU>nisi. vol. 5.1, no ''/ID Sep Oct !l'6K. pp 154.1 15511. MM PUBLICATIONS MINNITT. RCA. BUTTON. A., and KABLE. E.J.D. The gold content of pre-Malmani argillaceous sediments in the Transvaal Supergroup, north-eastern Transvaal. University of the Witwatersrand. Economic Geology Research Unit. Information Circular no. H2. Jul. 1973. SAAGF.R. R.. and MIHÁL1K. P. Notes on two varieties of pyrite from the Basal Reef of tiie Witwatersrand System. Econ. Geo!., vol. 62. 1967. pp. 71*>-731. VON RAHDEN. M.V.R. Apparent fineness values of gold from two Witwatersrand gold mines Econ. Geo!., vol. 60. 1965. pp. 980-997. Programme No 104 Recovery of gold from refractory ores I. Reports So. Title Year 8 Mineralogy and chemical behaviour of some refractory gold ores from the Barhsrton Mountain t.and 1966 3S Chemical tieatmcnt of refractory gold ores. Literature survey 1966 76 The electron-microprr.be investigation of a gold concentrate from the Louis Moore Mine 1966 79 investigation into the impnv.cnicnt of gold recovery in the cyanidation circuit of the Louis Moore gold mine 1966 85 The roasting of refractory gold ores and concentrates. Literature survey 1966 90 Mineralogical examination of schist sample from the Giant Reefs Mine 1966 107 Investigations on the treatment of refractory gold ores from the Giant Reefs Mine 1966 127 Comments on the size of gold particles observed in po'ished sections of ore from the Giant Reefs Mine 1967 148 The re ?overv of gold from the Fairy: cw dump after pretreatment with sulphurous acid 1967 21 I Refractory gold ores. Report on investigations into roasting of gold concentrates in the Edwards roaster of the Fairview and New Consort reduction plants 1967 333 The hot-water leaching process for refining arsenious oxide in floe dusts from the Fairview Mine 1968 343 A mineralogical investigation of gold-bearing sulphidic ore from the Florence-Devonian Mine. Barberton l »68 380 Preparation of gold ore before cyanidation 1968 ('l I The recovery of gold from sulphidic and arsenical ores mainlv from the Barberton area 1970 MM PUBLICATIONS Programme No 105 Refitting processes for gold and silver 1. Report Mo. TitL' Year 1880 The electrochemical reduction of silver chloride and its application to the refining of silver 1977 2. Papers ASHURST. KG., unit Nl Al.K. R W The porosity of gold electrodeposits. Trun.\. Inst. Metal Finishing, vol. 45. no. 2. I9h7. pp. 7*-HI. ATMORE. R B . HOWAT. D I) , and JOC'HENS. PR The effect of slat: and gold bullion composition on the removal of copper from mine bullion bv oxygen injection ./. S.Afr. Inst. Mm Mctull.. \o| .12. no 1 1971. pp. 5-11. SCHALCH. H . NIC'OI.. M.J.. and L'HARI TON. B P. An electrochemical study of some problems related to the electrorefintng of gold in chloride solutions. ISTI RSA1IOSAI. SYMI'OSU M ()\ CHl.ORIDF HYnROMF.TAI.l.VRCtY. PR(K FIDISCS Brussels. Benelux Metallurgie. ll>77 pp. 336-356. •SCHALCH. V:.. and NICOI.. M.J. A sludv of certain problems associated »Aíth the electrolytic refining of gold. Cold Bull., vol. 11. no. 4. Oct. 19 7,S pp. I |~-12/v Programme No. 150 Research and development of new processes for the refining of platinum-group metals 1. Reports Mo. Titl,- Y,:.r 1744 The refining of the platinum-group metals |i>75 1800 An electrochemical investigation of the dissolution and passivation of platinum in acid solutions 1 976 I HZ2 Stability constants and linear free-energy relations for the platinum ,;ioiip metals 1976 1864 The preparation of primary standard solutions for each of the noble metals 1977 • 1996 The extraction of gold from chloride solutions I »178 2. Papers l.l.OYI). P.I. The extraction of the ncutial and anionic niti ito complexes of nitrosylriilhenium In long-chain alky I amines ./. S.Afr. Clwm. Inst., vol 20. no. 1. lun ll>67 pp. 174 185. WARSHAWSKY. A. Polystyrenes impregnated with B-diphenylglyoximc. a selective agent for palladium. Talantu. vol. 2\. no 6. |')74 pp. 624 626. si N1M PUBLICATIONS 3. Patents Recovery and separation of platinum group metals and gold. S.Afr. Put. 71,4981. 21st Jul.. 1972. Separation and purification of platinum group metals and gold. S.Afr. Pat. 72,0308. 20th Jun.. 1973. (Also: Br Pat. 1.418.391, 2nd Jan.. 1973; Fr. Pat. 73.01418. 16th Jan.. 1973; Ital. Pat 976.937. 17th Jan.. 1973. Rhodes. Pat. 521/72. 27th Dec. 1972; S.W. Afr. Pat. 73,084. 20th Aug.. 1973; VV. (ier Pat P.23 02 150.3. 17th Jan.. 1973.) Programme No. 151 Research and development of new processes for the treatment of anode sludges from copper refineries 1. Reports So. Title Year 1761 I"hc determination, by atomic-absorption spectrophotometry. of minor elements in anode sludges and residues 1975 1771 The determination of silver, selenium, tellurium, antimony, tin. lead, and arsenic in anode sludges I97> 1784 A single-standard calibration method for use in analysis by X-ray-fluorescence spectrometry 1976 1795 The deterTimation of minor and trace elements in the leach liquors from anode sludges 1976 1809 The analysis, by flameless atomic-absorption spectrophotometry, of pure selenium and tellurium 197n .?. Patents The separation of platinum group metals and gold. S.Afr. Pat. 74/5109. 23rd Jul . 1975 (Also fl<7c I'm 832.216. 7th Aug.. 1975; Fr. Pal. 75 24681.7th Aug.. 1975: WM. /',//. 752779. Hth Aug.. 1^5: TV I'at. 3.985.552. 1st Aug . 1975.) A process ((-r the treatment of mixtures of platinum group metals and gold. S.Afr. Pal. 75/0593. 2 1st Jan.. 1976. (Also: flr/tf. Pal. 838.029. 29th Jan.. 1976.) Programme No. 152 Research and development of improved ore-dressing and smelting proLesses for the recovery of platinum-group metals and chromite from ores, including ores of the Merensky and Chromite Reefs I. Reports So. Title Year I 206 A review of the South African platinum-mining industry 197 I • 1898 Batch and pilot-plant tests on Mcrensk, Reef ore from the Western Platinum Mine 1977 1942 The accuracy of assays for platinum-group metals and gold on flotation tailings of platinum ores from the Merensky Reef 1977 Hi MM PUBLICATIONS 2. Paper I ROl/MART. R.C. *.. RrNNU •!. M.S.. and RAM Y.C C Hie smelting of copper-nickel concentrates IP. an electric furnace. THEEXTR.U 7/17. Mil Al.l.l RdY <>h COPPER Yanni>r„ulo\. >..,/«7<>. pp. 2~!4 ~2<->5 Programme No. 153 Development of new and improved methods for the analysts of platinum-group metals and gold in ores, concentrates, mattes, and pure metals I. Reports ,\i>. /"/'//,• }\tir '4l( The separation ot platinum from solution after fusion with potassium hitluondc l'>h,x 52'i The determination of the platinum -croup metals and told in ore samples 1'HiW Kl'il The determination of the platinum-croup metals and cold in ore samples — Part II I '",l) l"'l The preparation ot standard solutions tor the platinum-croup metal' and cold !>)"II ^**l> The determination. b\ atomic-absorption spectrophotometry, ot platinum. palladium, rhodium, ruthenium, cold. silver, and lead, in prills !1,_l1 l>? I The determination of cold h\ atomic absorption, and of platinum, palladium. rhodium, ami iridium In spectrophotometry in solutions I11"1 Vh The determination. b\ atomic-absorption spectrophotometry ot cold in eupellation prills and in platinum-metal concentrates I1'--1 1)77 The collection and rapid determination ot noble metals in ores and concentrates in the fusion technique using lead as ,i collector I"1" l|lM The separation anil determination ot noble met,lis b\ reversed phase extraction chromatography I1'": 100' Ihe chromatographic separation and determination ot platinum, palladium. rhodium, and iridium Il*"o 1017 The spectrophotometnc determination tit rhodium |w"o 10.17 I'he determination of cold in concentrates of the platinum-croup metals aftei extraction with dibutyl 'Carbitol' |>»"o I (MS The determination, bv neutron activation and tracer techniques, of the losses ot iridium during the firc-assav procedure for the platinum-group metals l>)70 MlSfi The determination, by atomic-absorption spectroscopy, of platinum, palladium. rhodium, ruthenium, and gold in Ihe presence of base metals I''70 I I OS Interferences relating to the determination of the noble metals by atomic-absorption spectrophotometry l'>7() I 137 The determination of the platinum-group metals and gold in ore samples — Part III I'»71 Mft MM PUBLICATIONS i». Title Year I 179 The spectrophotometry determination of iridium 1971 I 1X5 I"he recovery of noble metals for analysis. A radio-tracer investigation of losses 1971 12 1N The acid-extraction of noble metals from low-grade concentrates and ores, and the subsequent determination of platinum, palladium, rhodium, and cold 19?! 1219 Spectrographs analysis for the noble metals present in solutions 1971 1232 The determination of osmium 1971 1245 The separation of non-volatile noble metals by reversed-phase extraction chromatography 1971 1260 Interference bv base metals in the spectrophotometry determination of platinum metals ' 1971 1273 The coprecipitation of noble metals from tellurium. I Platinum, palladium, rhodium. and gold 1971 13 IK The determination, by atomic-absorption spectrophotometry, of osmium and iridium in solution 1971 1324 The separation of base metals from noble metals by cation exchange 1971 1371 Concentration of the noble metals by a fire-assay technique using nickel sulphide as the collector 1971 1401 The pressure dissolution of platinifcrous materials by the sealed-tube technique [superseded by Report 1X521 1972 1432 The determination of ruthenium and osmium in the residues resulting from the leaching of mattes 1972 1500 The chromatographic separation and determination of noble metals in matte-leach residues 1973 1534 The determination, by atomic-absorption spectrophotometry, of noble metals in the presence of sodium, barium, or sulphate ions. A comparison of uranium and lanthanum as releasing agents 1973 1555 The analysis, by atomic-absorption spectrophotometry, of matte-leach residues 1973 1569 The use of DDTU as an analytical reagent for the noble metals 1973 1574 The chromatographic separation and gravimetric determination of noble metals in matte-leach residues • 1973 15X0 The determination of silvet in ores, concentrates, and mattes 1973 1590 The separation of osmium from ruthenium in hydrochloric acid solutions 1974 I59X The use of carbon-rod devices in the determination of noble metals by atomic-absorption spectrophotometry 1974 m NIM PUBLICATIONS So. Title Year 1654 The determination of osmium in platiniferous media 1974 1669 An assessment of the carbon-rod atomizer for the determination of silver 1974 1679 The detection of noble-metal impurities in refined noble-metal solutions by thin-layer chromatography 1974 1684 The application of three-phase liquid-liquid extraction to the separation and concentration of noble metals \'->~A 1705 The effects of various matrix elements on the efficiency ot the fire-assav procedure using nickel sulphide as the collector 1975 1714 The efficiency of the fire-assay procedure, using nickel sulphide as a collector, for platinum, silver, gold, and iridium, and of the subsequent parting procedure 197s 1717 The use of isothioronium compounds as liquid-liquid ex tractants for the noble metals and silver 1975 1739 The determination of trace amounts of noble metals in sulphate media 1975 1826 Dithiocarbamate as a releasing agent in the atomic-absorption determination of noble metals in organic media 1976 1837 The rapid and precise determination of noble metals in matte-leach residues by atomic-absorption spectrophotometry 1976 1852 A revised method for the pressure dissolution of platiniferous materials by the sealed-tube technique | supersedes Report 14011 1976 1864 The preparation of primary standard solutions for each of the noble metals 1977 1865 A sensitive method for the measurement of osmium by atomic-absorption spectrophotometry 1977 1881 n-octylanilinc. a new treatment for noble metals 1977 1905 An examination of fire-assay techniques as applied to ehromite-hearing materials 1977 1912 The determination, by X-ray-fluorescence spectrometry, of noble and base metals in matte-leach residues 1977 1919 The determination, by X-rav-fluorescence spectrometry, of gold in activated charcoal ll>77 1940 The extraction of the noble metals with '/-octylaniline. and its application to the analysis of platinum-bearing materials 1978 1948 The measurement of trace amounts of gold in solution by atomic-absorption spectrophotometry ami carbon-roil atomi/ation 1978 • 1953 The separation, by anion exchange, of noble metals on substituted cellulose 1978 NIM PUBLICATIONS 2. Papers JONES. E. A.. WARSH AWSKY. A.. DIXON. K.. and NICOLAS. D.J. The group extraction of noble metals with .V-(decyl)-,V,,\"-diphenyl isothiouronium bromide and their determination in the organic extract by atomic-absorption spectrometry. Analyt. chim. Acta, vol. 94. 1977. pp. 257-268. MALLETT. R.C.. PEARTON. D.C.G.. RING. E.J.. and STEELE. T.W. Interferences and their elimination in the determination of the noble metals by atomic-absorption spectrophotometry. Talanta. vol. 19. no. 2. 1972. pp. 181-195. MALLETT. R.C '.. PEARTON. D.C.G.. RINCi. E.J.. and STEELE. T.W. Interferences encountered in the determination of the noble metals by atomic-absorption spectrophotometry. J. S.Afr. Chem. Inst.. vol. 25. no 3. 1972. pp. 219-229. PALMER. I.. PALMER. R.. and STEELE. T.W. The separation of platinum, palladium, rhodium and gold from ores and concentrates by aqua regia extraction and by high-temperature chlorination followed by acid leaching. J. S.Afr. Chem. Inst., vol 25. no 3. 1972 pp. 190-197. PEARTON. D.C.G.. BRECKENRIDGE. R.L.. DUBOIS. M.. and STEELE. T.W. The pressure dissolution of platiniferous materials by the sealed-tube technique and the analysis of the resulting solutions. J. S.Afr. Chem. Inst., vol. 25. no. 3. 1972. pp. 244-253. •POHLANDT. C The extraction of noble metals with n-octylaniline. Talanta. vol. 26. no. 3. Mar 1979 pp. 199-206. POHLANDT. C. ROBERT. R.. VALLÉE. A.M.. and STEELE. T.W. The separation of non-volatile noble metals on cellulose, and the application of the technique to the analysis of matte-leach residues. J. S.Afr. Chem. Inst., vol. 25. no. 3. 1972. pp. 198-213. POHLANDT. C. and STEELE, T.W. Separation of the non volatile noble metals by reversed-phase extraction chromatography. Talanta. vol. 19, no. 7. 1972. pp. 839-850. POHLANDT. C. and STEELE. T.W. Chromatographic separation and determination of noble metals in matte-leach residues. Talanta, vol. 21, 1974. pp. 919-925. ROBERT, R.V.D., VAN WYK. E.. PALMER, R . and STEELE. T.W. The development of a fire-assay procedure using nickel sulphide as the collector for the noble metals. J. S.Afr. Ch»m. Inst., vol. 25. no. 3. 1972. pp. 179-189. RUSSELL, B.G.. EDDY, B.T., BECKMANN, G., and STEELE. T.W The application of X-ray-fluorescence techniques to the determination of the noble metals. J. S.Afr. Chem. Inst., vol. 25, no. 3. 1972. pp. 297-310. Programme No. 154 Mineralogical studies of platinum-group metals and chromite-containing reefs in the Bushveld Complex I. Reports So. Title Year 325 Investigation for nickel and precious metals in samples from Malclane 1968 1203 The chromitc of the Bushveld Igneous Complex. An assessment of published information 1971 H't N1M PUBLICATIONS No. Title Year 1415 Th; interrelation of the chemical, physical, and certain metallurgical properties of chrome spinels from the Bushveld Igneous Complex 1972 1709 The mineralogy, chemistry, and certain aspects of reactivity of chromititc from the Bushveld Igneous Complex 1975 1726 Mertieite and an unnamed compound of palladium with arsenic and tin in a mineral intergrowth from the Atok Mine 1975 1730 The chromitite from the Marico occurrence, western Transvaal, its alteration, and possible reasons for its refractory nature 1975 2. Papers BRYNARD. H.J.. DE VIL.LIERS. J.P.R . and VTUOEN. E.A. A mineralogical investigation of the Merensky Reef at the Western Platinum Mine, near Marikana. South Africa. Earn. Geol., vol. 71. no. 7. 1976. pp. 1299-1307. GASPARRINI. E . and HI EMSTRA. S.A Paolovite (Pd.Sn)from the Atok Mine in the Merensky Reef Trans. Geol. Soc. S.Afr.. vol. 78. 1975. pp. 167-169. MIHÁLIK. P., HIEMSTRA. S.A.. and DE VILLIERS. J.P.R. Rustenburgite and atokite. two new platinum-group metals from the Mcrenskv Reef. Bushveld Igneous Complex. Can. Mineralogist, vol. 13. no. 2. 1975. pp. 146-150. MIHÁLIK. P.. JACOBSEN. J.B.E.. and HIEMSTRA. S.A Platinum-group minerals from a hydrothermal environment. Earn. Geol.. vol. 69. no. 2. Mar-Apr. 1974. pp. 257-262. SCHWELLNUS. J.S.I.. HIEMSTRA. S.A . and GASPARRINI. E The Merensky Reef at the Atok Platinum Mine and its environs. Earn. Geol.. vol. 71. 1976 pp. 249-260. Programme No. 200 Development of improved processes for the recovery of phosphates and phosphorus chemicals I. Reports No. Title Year 120 Exploratory tests on the recovery of apatite and magnetite from the farm Schiel 1967 302 Mincralogical examination of phosphate in pyroxenite from St. Agnesfontein. north-western Transvaal 1968 950 A mincralogical study of eight samples of phosphate ore from Stecnkampskraal. Van Rhynsdorp. Cape Province 1970 1028 Exploratory heavy-liquid separation tests on a low-grade apatite concentrate 1970 1204 The flotation of phoscoritc ores. Possible correlations between chemical variables in solution and metallurgical performance 1971 NIM FUBLICATIONS 2. Paper LOVELL. V.M. Froth characteristics in phosphate flotation. FLOTATION. A.M. GAUDIN MEMORIAL VOLUME. Fuerstenau, M.C. (ed). vol. 1. New York, American Institute of Mining. Metallurgical and Petroleum Engineers. Inc.. 1976. pp. 597-621. Programme Mo. 201 Development of improved processes for the recovery of fluorspar 1. Reports No. Title Year 11 Concentration of fluorspar from the farm Sirydfontein. Marico district. Preliminary investigation 1966 208 Determination of fluorne in fluorspar ores by neutron-activation analysis 1967 1424 A review of the World's fluorspar industry, with particular reference to South Africa 1972 1438 A mineralogical examination of fluorspar ores from the Ottoshoop area 1972 I486 Review of the fluorochemical industry of the World 1972 1577 Quantitative analysis of fluorite ores by X-rav diffraction 1973 1595 Preliminary tests on low-grade brecciated fluorspar ore from the Ottoshoop district 1973 1612 Flotation tests on sulphide-bearing high-grr.de brecciated and wad ores lu74 1615 Fluorspar pellets. A survey of the Wor'd market and an assessment of future South African production 1974 1643 Further tests on low-grade brecciated fluorspar ore from the Ottoshoop district 1974 1646 Examination of the method of analysis for calcium fluoride in fluorspar 1974 1660 An economic pssessment of the production of high-grade fluorspar pellets 1974 1668 An updated summary of the World's fluorspar industry 1974 1715 Flotation tests on various types of ore from the Ottoshoop district 1975 1725 The determination of silica in fluorspar by 14 MeV neutron-activation analysis 1975 1814 An updated summary of the World's fluorspar industry, 1975 1976 2. Papers CiOSSLING. H.H.. and McCULLOCH, H.W. Fluorspar — the use of a non-metallic mineral. Miner. Sci. Engng, vol. 6, no. 4. Oct. 1974. pp. 206-222. SEE. J.B. Fluorspar and fluorine compounds in high-temperature smelting and refining of metals. Miner. Sci. Engng. vol. 8. no. 4. Oct. 1976. pp. 217-241. '<; NIM PUBLICATIONS Programme No. 202 Investigation of processes for the production of alumina and aluminium frorr. local raw materials I. Reports So. Title Year 26 Economic evaluations of the possible production of alumina from Sasol ashes In the ammonium sulphate baking process and the ammonium fluoride and sulphuric acid leaching process 1967 30 The extraction of alumina from Sasol coal ash 1966 51 Exploratory tests on the recovery of diaspore from a ferruginous shale from the Gamagararand 1966 69 Preliminary examination of ijolite from Spitzkop I 966 89 Mireralogical examination of ijolite from SpitAop 1966 143 A review of the investigations into the possibility of producing alumina and aluminium from South African ores 1967 149 The extraction of alumina, potash, and soda from a nepheline concentrate 1967 °rogramme No. 203 Investigation of processes for the production of aluminous refractories, with special reference to sillimanite and andalusite I. Reports No. Title Year 48 The investigation of a suspected sillimanite-bearing sample 1966 307 Preliminary examination of kyanite-bcaring material from Granville. I.eydsdorp 1968 347 Concentration tests on rich blue nobby' kyanite-bearing ore from Nkandhla. Zululand 196« 493 Concentration of andalusite from alluvial sands from the farm Goedgelegen. Groot Marico district 1969 1281 The heavv-medium cyclone concentration plant for the treatment of andalusite sands on the farm 'Wondcrfontein', Grooi Marico district 1971 1445 Cost assessment for the production of andalusite concentrates 1972 I47H An examination of two andalusite-bea'-.ng samples from Magostad No. 6. Marico district, western Trinsvaal 1972 1505 The production of the refractory aluminium silicates, with special reference to South Africa ' 1973 1779 A summary of work done on the concentration of andalusite from deposits in the western I ransvaal 1976 NIM PUBLICATIONS Programme No. 204 Processes for the production of magnesite and magnesium oxide I. Report No. Title Year 1706 Concentration of magnesite from Apiesbomen. Burgersfort district 1975 Programme No. 206 Processes for the production of sodium chemicals (e.g., salt, soda ash) I. Repvrt No. Title Year 1843 The treatment of Athlone Sewerage-plant effluent by the DESAL process 1976 Programme No. 207 Processes for the production of potassium chemicals I. Report No. Title Year 298 The recovery of potassium from phlogopite ! 968 Programme No. 250 Processing of pegmatites for the recovery of niobium, tantalum, spodumene, mica, beryl, etc. 1. Repo'ts No. Title Year 21 The use of heavy-medium separation for the recovery of spodumene 1966 96 The mode of occurrence of beryl in grey gneiss along the contact with the Gesie pegmatite 1966 102 Micas of the Noumas pegmatite 1966 142 Micas from the Namaqualand pegmatite area 1966 190 Micas from the Namaqualand pegmatite area 1967 22i Test to recover tantalite-columbite from a bulk sample of tailing from the Noumas pegmatite by pneumatic tabling 1967 >>i N1M PUBLICATIONS No. Title Year 233 A chemical and mineralogical study of microlite from Noumas pegmatite (available only on loan from N1M Library! 1967 258 Exploratory concentration tests by Warren Spring Laboratory on the use of the fluidized-bed concentrator for the recovery of spodumenc 1967 262 Preliminary gravity concentration tests for the recovery of scheelite. wolframite, and cassiterite from the tailing dump at Boksputs in the Gordonia district 1967 266 Concentration tests for the recovery of lepidolite from tailing dumps at Helicon and Rubicon Mines by electrostatic separation and flotation 1968 473 Mineralogical examination of tantalite-bearing samples from the Warmbad district. South West Africa 1968 482 Review of work on the treatment of pegmatites 1969 483 Summary of the mineralogical investigation of pegmatites 1969 494 A preliminary study of beryllium distribution of phyllosilicates from the Etiro pegmatite, karibib. South West Africa 1966 496 A preliminary study of beryllium distribution in quart/es from the Etiro pegmatite. Karibib. South West Africa 1969 1308 Heavy-medium tests for the treatment of pegmatite ores and dump material in Namaqualand 1971 1443 Gravity concentration tests on four samples from Tantalite Valley. S.W.A. 1972 1508 The selection of economically mineralize J pegmatites according to their border-zone characteristics 1973 1583 Preliminary tests on winnowing for the recovery of mica 1973 1733 A mineralogical investigation of weathered carbonatite from Salpeterkop 1975 1813 The economic potential of some pegmatites from the Kenhardt area in relation to the trace-element content of their border zones 1976 1829 An investigation of weathered carbonatite from Salpcterkop 1976 Programme No. 251 Recovery of ilmenite, rutile, zircon, and other minerals from beach-sand and similar deposits I. Reports No. Title Year 1217 Investigation of beach sands from Bantu Area No. 4. Nhlabane. /ululand 1971 1541 Further tests on beach sands from Bantu Area No. 4. Nhlabane. /ululand 1973 No. Title Year »619 Reduction ot the chromium in ilmenite concentrates 1974 1632 A mineralogical examination of beach-sand concentrates from a pilot plant at Richards Bay 1974 1830 The determination of iron in zircon beach sands and its leachability 1977 Programme No. 252 Recovery of tungsten concentrates from ores, and the development of processes for the refining of tungsten I. Reports No. Tide Year 1710 The recovery of scheelite from Shongona, north-western Transvaal 1975 1817 The rapid determination by X-ray-fluorescence spectrometry of tungsten in tungsten ores and concentrates 1976 1875 The determination of tungsten and iron in ferrotungsten alloys by X-ray-fluorescence spectrometry 1977 Programme No. 253 Processes for the upgrading of manganese ores and for the production of manganese dioxide and manganese chemicals I. Reports No. Title Year 63 X-ray and spectrographs analyses of seven samples of manganese ores 1966 65 Samples of manganese dioxide for battery tests by the CSIR 1966 78 X-ray investigation of four samples of manganese ore 1966 83 Qualitative X-ray examination of two samples of MnO., ore 1966 97 X-ray diffraction analysis of six samples of manganese ore from Graskop. eastern Transvaal 1966 98 Qualitative X-ray analysis of manganese dioxide ore from Graskop 1966 108 An X-ray-diffraction method for the quantitative determination of nsutitc (y-MnO.) and cryptomelam: ( 111 The X-ray investigation of a sample of upgraded material from the Graskop wad deposit 1966 288 Ramsdellite (MnO;) from Hotazel Mine, northern Cape Province 1968 • 1920 A mineralogical investigation of Mamalwan and Wcssels manganese ores 1977 •>5 NIM PUBLICATIONS 2. Pmpen DE VILLIERS, J.P.R. The crystal structure of braunite with refeience to its solid-solution behaviour. Amer. Mineralogist, vol. 60. 1975. pp. 1098-1104. DE WAAL, S.A. Ramsdellite from the Hotazel Mine, northern Cape Province. South Africa. Econ. GeoL, vol. 64. no. 2. 1969. pp. 221-222. RUSSELL, B.G. Flame-photometric determination of sodium and potassium in manganese ores. Analyst. Lond.. vol. 91. no. 1085. Aug. 1966. pp. 511-519. Programme No. 255 Research and development for the production and use of zirconium and its alloys in non-nuclear fields I. Reports No. Title Year 1808 Spectrophotometric determination (with pyrocatechol violet as chromogenic agent) of aluminium in zirconium metals and in the residues from anode sludges 1976 1861 The determination of some impurities in zirconium metal by instrumental neutron-activation analysis 1976 1902 The determination of boron in aluminium of high purity 1977 Programme No. 256 Recovery of iron, titanium dioxide, and vanadium from iron ores containing titanium and vanadium I. Reports No. Title Year 54 Electron-microprobe inves:igation of magnetite from the Bushveld Igneous Complex 1966 161 The quantitative electron-microprobe determination of the magnesium content of magnetite from Phalaborwa 1967 328 A mineralogical examination of iron ore from Nooitgedacht, near Airlie Station, eastern Transvaal 1968 1488 Extraction of rutile from Highveld smelter slags 1972 1515 A mineralogical investigation of titaniferous magnetite from the Mambula Intrusion, Nalal 1973 1522 An electron-microprobe investigation of an exsolvcd mineral in a sample of magnetite 1973 I.-Í46 Pilot-plant «melting campaign on iron ores from Tetc 1973 NIM PUBLICATIONS \<». Title Year 1557 COM estimate for the production of pig iron in the Tete district of Mozambique 1973 1565 A mincralogical investigation of the vanadium-rich titaniferous iron ore from Tete. and the slag produced from it 1973 1600 Dilute-acid leaching of slag from Tete ore 1973 1602 The roasting of Tele slag for the extraction of vanadium 1973 1614 The extraction of rutile from smelter slags 1974 1620 The recovery of titanium dioxide from Tete siag by the sulphate route 1974 1635 Magnetic tests on Tete slag and ore 1974 1671 Pyrometallurgical retreatment of a slag for the recovery of vanadium 1974 2. Papery JOC HENS. PR. SUMMER. G . and HOWAT. D.D. Preliminary equilibrium and non-equilibrium phase studies of litaniferous slags. J. Iron Steel Inst., vol. 207. no. 2. Feb. 1969. pp. 187-192. I.YCETT. RAH. JOC HENS. PR., and HOWAT. D.D. The crystallization of rutile from titaniferous slags. J. S.Afr. Inst. Min. Vfetall.. vol. 76. no 2. Sep. 1975. pp. 20-24. Programme No. 258 Recovery of tin concentrates from ores, and refining of tin 1. Reports So. Title Year 12 Exploratory tests on the concentration of tin ore from Kuils River. C*.P. 1966 128 Exploratory concentration lest for the recovery of cassitcrite from Sandspruil No. 51. Bronkhorstspruit district 1967 350 Concentration of cassitcritc from two samples from Enkeldoorn. Bronkhorstspruit district 1968 1589 Preliminary investigations into the flotation of tin dioxide, cassiterite. and some related gangue minerals 1973 2. Papers DE WAAL. S A. The Bushveld granites in the /aaiplaats area. Trans. Cieol. Sot: S.Afr., vol 75. pt 2. May-Aug. 1972. pp. 135-147. MclVER. JR. and MIHAI.IK. P Stannian andradite from Davib Osf, South West Africa CUM. Mineralofiiu, vol. 13. no. 3. Aug. 1975. pp. 217 221. 97 NIM PUBLICATIONS Programme No. 259 Processes for the production and refining of niootum and tantalum metal and their alloys I. Reports Mo. Title Year 1010 The leaching, with hydrofluoric acid, of materials containing tantalum and niobium I 970 1154 The extraction and separation of niobium and tantalum by liquid-liquid extraction using tri-n-butyI phosphate WO 1178 Further leaching tests, with hydrofluoric acid, on a tantaiite concentrate 1970 1282 The c termination of free hydrofluoric acid in the leach liqucrs from tanlalum-nuibium ores > 971 Programme No. 262 Development of new and improved methods for the analysis of silicate-containing ores and concentrates I. Reports So. Title Year 5 The spectrophotometry determination of trace amounts of tin I9f»b 10 The determination of phosphate in silicate samples I9bh 37 The determination of aluminium in silicate samples by complexomctric titration I9hh 40 The spectrophotometry determination of tin in silicate materials I 9hb 82 The spectrophotometry determination of cobalt with 2-nitro-l-naphthol I9bh 13b Determination of aluminium in silicate materials by solvent extraction and atomic-absorption spectrophotometry 19b 7 137 Determination of aluminium by atomic-absorption spectrophotometry with the nitrous oxide and acetylene flame I9hb 138 The determination of beryllium by atomic-absorption spectrophotometry I9h7 151 The spectrophotometry determination of minor amounts of antimony fW>7 IbO The determination of copper in rocks and ores by atomic-absorption spectrophotometry I'"'7 173 The determination of beryllium bv atomic-absorption spectrophotometry I9f»7 193 An investigation into Ibe use of pl;iiinum ware for silicate analysis I Mb7 200 The spcctrochemical analysis of silicate material hy a plasma-jet source l'Wi7 9« MM PUBLICATIONS So. Tide Year 216 The determination of minor quantities of rnan^. inese in silicate materials 1967 265 l"hc spcctrophotometric determination of minor quantities of chromium in silicate materials 1%7 27h The determination of vanadium in silicate materials by atomic-absorption spectrophotometry 1968 2X4 The determination of lead in silicate materials by atomic-absorption spectrophotometry 1 lW>8 358 The determination of mercury at concentrations of parts per thousand million in geological samp'es I 968 359 The separation and determination of calcium and magnesium ir. silicate material 1968 36 I The spectre,photometric determination of small amounts of calcium and magnesium in glass sands and allied materials 1968 362 The determination of cobalt in geological samples b\ atomic-absorption spectrophotometry 1 W>,H 392 The spectrophotometry determination of small amounts of calcium and magnesium in glass sands and allied materials 1968 456 Method for the determination of vanadium in silicate materials by atomic-absorption spectrophotometry 1969 457 The determination of rubidium and caesium in silicate materials by atomic-absorption spectrophotometry 1969 459 Determination of tantalum in rocks and minerals by paper-partition chromatography 1969 466 The volumetric determination of aluminium in silicate materials 1969 486 Determination of strontium in ores by atomic-absorption and emission spectrophotometry 1969 487 The spectrophotometry determination of minor quantities of vanadium in silicate materials 1969 499 The determination of molybdenum by atomic-absorption spectrophotometry 1969 524 The determination of minor amounts of molybdenum in soil samples 1969 537 Flame-photometric determination of lithium with the Techtron AA4 spectrophotometer 1969 894 The determination of th nium in silicate rocks 1969 991 (he determination of thorium in solid samples and in solutions resulting from the leaching of ores 1970 998 The determination of macroscopic amounts of total rare-earth oxides and thorium oxide 1970 NIM PUBLICATIONS No. Title Year 1076 The direct determination of acid-soluble uranium in silicate ores in the solutions resulting from leaching these ores 1970 1077 The determination of acid-soluble, acid-insoluble, and total urar.ijm in silicate ores 1970 1088 The determination of ferrous iron in refractory minerals 1971) 10% The spectrophotometry determination of titanium in ores, rocks, and minerals, with diantipyrylmethane 1971) 1113 The determination of uranium in ores and solutions by X-ray fluorescence 1971) 1427 The pressed-fused disc — a technique for the preparation of ore samples to be analysed bv X-ray fluorescence 1972 1428 The separation and determination of trace and minor amounts of individual rare earths in silicates 197 2 1503 Fast-neutron-aciivation analysis for the determination of oxygen in rock samples 1973 1514 The determination by X-ray-fluorescence spectrometry of minor amounts of niobium and tantalum in geological materials 1973 1571 The commissioning of a direct-reading spectrometer for the analysis of silicate rocks by the use of the graphite-pellet technique 1973 1579 The determination of tin in geochemical-survey samples 1973 1599 The analysis of silicate rocks and metallurgical slags by X-ray-fluorescence spectrometry 1974 1611 The X-ray-fluorescence determination of percentage concentrations of ni.>bium and tantalum in ores and minerals 1974 1656 The analysis of geological samples for trace elements b\ direct-reading emission spectrometry 11,74 1665 The determination of minor amounts of antimony in ores and concentrates by atomic-absorption spectrophotometry 1974 I 742 The determination of tin in ores, residues, and concentrates by X-ray-fluorcscence spectrometry 1975 1834 The analysis of slag and silicate samples with a fully automatic sequential X-ray spectrometer 1976 1840 The spectrophotometry determination of total uranium in silicate ores and leach liquors by use of bromo-PAPAP 1976 1841 The determination of acid-soluble uranium in silicate ores and solutions 1976 1886 A rapid method for the determination of fluoride in geological samples 1977 1904 Separation of rare earths from solutions of phosphoric acid 1977 NIM PUBLICATIONS So. Title Year 1943 A review of the literature on the separation and determination of rare-earth elements 1978 1956 An improved ion-exchange separation of rare-earth elements for spectrographic analysis 1978 2. Papers PEARTON. D.C.G.. and TAYLOR. J.D. The determination of copper in rocks and ores by atomic absorption spectroscopy Bull. S.Afr. /mi. Assayers Analysis, no. 4. Jul. 1969. PEARTON. D.C.G.. TAYLOR. J.D.. FAURE. P.K.. and STEELE. T W. The determination of vanadium in silicate materials by atomic absorption spectrophotometry. Analyt. chim. Acta. vol. 44. 1966. pp. 353-359. RUSSELL, B.G., SPANGENBERG. J.D.. and STEELE. T.W. An investigation into the use of planum ware for silicate analysis. Talanta, vol. 16. no. 4. 1969. pp. 487—196. Programme No. 500 General physicochemical study of flotation and flocculation, and the development of reagents for these processes I. Report* So. Title Year 42 The redox potential of solutions of potassium ethyl xanthatc 1966 43 The effect of oxygen on the stability of solutions of potassium ethyl xanthate 1966 45 An apparatus used in the study of interactions between sulphide minerals, sulphydryl reagents and oxygen 1966 3(M) The mixed-collector system xanthate plus quaternary ammonium halide. A literature survey 1968 312 An investigation of the influence of alkyl trimethyl ammonium halides on the stability of potassium ethyl xanthate in aqueous solution 1968 340 The detection of the formation of a bulk adduct between potassium ethyl xanthate and dodecyl trimethyl ammonium bromide in aqueous solution 1968 371 A preliminary investigation of cyanide-sylphydryl mixed-ligand complexes of rrercuric ion 1968 437 Tie bathochromic shift of the 381 nm absorption peak in aqueous solutions of potassium ethyl xanthatc containing dodecyltrimcthyl ammonium bromide 1968 442 n Ondcrsoek na die gebruik van die Hallimondbuis vir die kwantitaticwe nestudering van flottasieverskynsels met besondere verwysing na die kondisioncring van apatiet en kalsiet 1968 mi NIM PUBLICATIONS No. Title Year 443 The determination of anionic surface-active agents in dilute aqueous solution I9f>8 449 The determination of cationic surface-active agents in dilute aqueous solution 19hK 464 The saturation pressure of nitrogen in determinations of surface area I9h9 498 An infrared investigation of the potassium alkyl xanthate and alkyl trimethyl ammonium bromide mixed-collector system I9h9 5 527 Quantitative aspects of the interaction between galena, xanthate. and oxygen at a pH value of 10 ' 1969 533 Determination of the stoichiome'ry and stability constants of mercury (II )-cyanide-xanthate complexes. I. Low-concentration region 19h9 870 Determination of the stoichiomet-y and stability constants of mercurydD-cyanide-xanthate complexes. II. High-concentration region 1970 1026 Small-scale flotation techniques 1970 1114 A study of the products of reaction between galena and aqueous xanthate solutions 1970 1125 Studies of the stability of xanthates and dixanthogen in aqueous solution, and the chemistry of iron xanthates and cobalt xanthates 1971 1296 A review of reactions in the flotation system galena-xanthate-oxygcn 1971 1340 The cadmium-cyanide-xanthate system 1971 1372 The electrical double-layer properties of kimberlile suspension» 1971 1402 A study of mineral-surface properties by the use of gas-adsorption measurements 1972 1403 The coagulation and flocculation of suspensions of kimberlite 1972 1414 The use of a closed recirculation apparatus in the study of the galena-oxygen-xanthate system 1972 1439 The reaction of sulphide minerals with thiol compounds 1972 1447 A preliminary electrochemical investigation of the galcna-xanlhate-oxygen system in aqueous solution 1972 1479 Infrared studies of the adsorption of oleate species on mineral surfaces, with special reference to fluorite 1972 1490 The adsorption of krypton, nitrogen, and water vapour on sodium oleate 1972 1495 A method for the determination of elemental sulphur on the surface of sulphide mineials i ->72 1 785 Some thermodynamic aspects of systems relevant to the flotation of sphalerite 197b in: I N1M PUBLICATIONS No. Title Year 1854 The interaction of pyrite, o\yg n. and xanthate 1977 18% The interaction of pyrite, oxygen, and xanthates 1977 • 1988 The effect of particles on the stability of flotation froths 1978 2. Papers ALLISON. S.A.. and FINKELSTEIN. N.P. A study of the products of reaction between galena and aqueous xanthate solutions. Trans. Instn Min. MeinlL, vol. 80. no. 781. Dec. 1971. pp. C235-C239. ALLISON. S.A.. GOOLD. LA.. NICOL. V.J.. and GRANVILLE. A. The products of reaction between sulphide minerals and aqivous xanthate solutions, and a correlation of the products with electrode rest potentials. Metatl. Trans.. v>l. 3, no. 10. Oct. 1972. pp. 2613-2618. ASHURST. KG.. FINKELSTEIN. N.P.. and RICE, N.M. Studies of cyanide-xanthate mixed ligand complexes of mercurydl). J. chem. Soc. (A), 1970. pp. 2303-2307. FINKELSTEIN. N.P. Kinetic and thermodynamic aspects of the interaction between potassium ethyl xanthate and oxvgen in aqueous solution. Trans. In.sln Min. Metall.. vol. 76. no. 724. Mar. 1967. pp. C5I-C59. FINKELSTEIN. N.P The influence of alkyltrimcthyi ammonium halides on the stability of potassium ethyl xiT.thate in aqueous solution. /. L.ppl. Chem., vol. 19. Mar. 1969. pp. 73-76. FINKELSTEIN. N.P. Quantitative aspects of the role of oxygen in the interaction between xanthate and galena. Sepn Sci., vol. 5. no. 3. Jun. 1970. pp. 227-256. FINKELSTEIN, N.P. The rate oi decomposition of alkaline xanthate solutions. Colloid Polymer .So., vol. 255. 1977. pp. 168-169. FINKELSTEIN. N.P.. and ALLISON. S.A. The chemistry of activation, deactivation and depression in the flotation of zinc sulphide: a review. FLOTATIONA M. GAVDIN MEMORIAL VOLUME. Fuerstenuu, M.C. led.), vol. I. New York. American Institute of Mining. Metallurgical and Petroleum Engineers. Inc.. 1976. pp. 414-457. FINKELSTEIN, N.P.. ALLISON. S.A.. LOVF.l.L. V.M.. and STEWART. B.V. Natural and induced hydrophobicity in sulphide mineral systems. ADVANCES IN INTERFACIAl. PHENOMENA O, PARTICULATEISOLUTIONIGAS SYSTEMS; APPLICATION TO FLOTATION RESEARCH. Somasunduran, P., and Grieves, R.R. feds.). New York. AIChF. Chemical Engineering Progress Symposium Series no. 13, 1975. FINKELSTEIN. N. P.. and I OV ELI., V.M. Fundamental studies of the flotation process: the work of the National Institute for Metallurgy. J. S.Afr, Inst. Min. Metall.. vol. 72. no. 12. Jul. 1972. pp. 328-341. FINKELSTEIN. N.P.. and POLING. (i.W. The role of dithiolates in the notation of sulphide minerals. Miner. Sci. Enpifi, vol. 9. no. 4. Oct. 1977. pp. 177-197. GAUDIN. A.M., and FINKELSTEIN. N.P. Interactions in the system galena-potassium ethyl xanthate-oxygen, Nature, Land., vol. 207. no. 4995. Jul. 1965. pp. 389-391. GRANVILLE. A.. FINKE1.STEIN. N.P.. and ALLISON. S.A. Review of reactions in the flotation system galena-xanthate-oxygcn. Trans. I mm Min. Metall., vol. 81. no. 784. 1972. pp. CI-C30. 101 NIM PUBLICATIONS HALL. PC. LOVELL, V.M., and FINKELSTEIN, N.P. Adsorptior of water vapour on ionic solids containing preadsorbed sodium oleate. P.Tt I. Calcium fluoride. Trans. Farad. Soc.. vol. 66, no. 570, pt 6. Jun. 1970. pp. 1520-1529. HALL. PC. LOVELL. V.M.. and FINKELSTEIN, N.P. Adsorption of water vapour on ionic solids containing preadsorbed sodium oleate. Part 2. Calci'jm carbonate. Trans. Farad. Soc.. vol. 66. no. 574. pt 10. Oct. 1970. pp. 2629-2635. HARRIS. P.J.. and FINKELSTEIN. N.P. Interactions between sulphide minerals and xanthates. I. The formation of monothiocarbonate at galena and pyrite surfaces. Int. J. Miner. Proc, vol. 2. no. 1. 1975. pp. 77-100. HARRIS. P.J., and FINKELSTEIN, N.P. The formation of monothiocarbonates during the reaction between xanthates and sulphide minerals in flotation systems. PROCEEDINGS ELEVENTH MINERAL PROCESSING CONGRESS. Erne Minerariv Scrdo. Cagliari, Instituto di Arte Mineraria. Special volume. 1975. pp. 35-57. LOVELL, V.M. The determination of the surface area oi >-literals by the B.F..T. method: some associated problems. Powder Technol., vol. 12. 1975. pp. 71 —7 • LOVELL, V.M. Froth characteristics in phosphate flotation. FLOTATION. AM. GAVDIN MEMORIAL VOLUME. Fuerstenau, M.C. (ed.). vol. I. New York. American Institute of Mining. Metallurgical and Petroleum Engineers, Inc., 1976. pp. 597-621. LOVELL V.M., GOOLD. LA., and FINKELSTEIN. N.P. Infrared studies of the adsorption of oleate species on calcium fluoride. Int. J. Miner. Process., vol. I, no. I. Jan. 1974. pp. 183-19? LUSHER, J.A. The association of calcium ion with nickeliferous pyrrhotite. Surface Sci., vol. 5. 1966. pp. 252-254 MACKENZIE, J.M.W. Zeta-potential studies in mineral processing: measurement techniques and applications. Miner. Sci. Engng, vol. 3, no. 3. Jul. 1971. pp. 25-43. POHLANDT, C. COOK. E.B.T., and STEELE. T.W. Determination of small quantities of xantha'e. Talanta, vol. 16. no. 8. 1969. pp. 1129-1135. Programme No. 501 General jhysicochemical study of hydrometallurgy I. Reports No. Title Year I0I2 The coordination numbers of cyanide complexes of zinc, cadmium, and mercury in aqueous solution 1970 1093 The calculation of the equilibrium distribution of metal-ion complexes in multicomponent aqueous systems 1970 1153 E„/E„ diagrams. Their use in the estimation of unknown standard reduction potentials, with particular re erence to the d'" electronic-configuration ions 1970 1582 The construction and testing of a precision calorimeter 1973 I6I7 An electronic differential precision thermometer 1974 KM NIM PUBLICATIONS No. Title Year 1r»26 Formation constants of zinc chlorocomplexes in perchlorate medium 1974 1629 The thermodynamics of the formation of complexes of silver with some substituted pyridines 1974 1712 The thermodynamics of the formation of chlorocomplexes of nickel and copper in perchiorate medium 1975 1764 Correlations of the free-energy and enthalpy changes of the d'" metal ions Ag". Hg- . and Cd-' with a variety of monodentate ligands 1975 1785 Some thermodynamic aspects of systems relevant to the flotation of sphalerite 1976 1799 An electrochemical investigation of copper cementation on iron 1976 1820 The thermodynamics of the formation of chlorocomplexes of iron(lil). cobaltiih. ironiii). manganese(ii). and copnerdi) in perchlorate medium 1976 1822 Stability constants and linear free-energy relations for the platinum-group metals 1976 1828 -y-picoiine adducts of the nickel, copper, and zinc chelates of 2-thenoyltrifluoroacetone 1976 1839 A valence-bond study of dialkalis and alkali hydrides 1977 1889 Entropy relations in the formation of complexes of siiverd). mercuryoi). and cadmium(li) with monodentate ligands 1977 1914 The thermodynamics of the formation of sulphate complexes of iron(lll). cobalt(ll). manganese(ll), and copper(II) in perchlorate medium 1977 • 1951 Potentialities and limitations of four-parameter equations for the correlation of formation constants of metal-ion complexes in aqueous solution 1978 2. Papers ASHURST, KG.. FINKELSTEIN, N.P.. and GOOLD, LA. The coordination numbers of cyanide complexes of zinc, cadmium, and mercury in aqueous solution. / Chem. Soc. (A), 1971. pp. 1899-1902. ASHURST. K.G.. and HANCOCK, R.D. Characterization of inner- and outer-sphere complexes by thermodynamics and absorption spectra. Part 1. Sulphato-complexes of the first-row transition elements. J. Chem. Soc., Dalian Trans., 1977. pp. 1701-1707. BOEYENS, J.C.A, Electrostatic calculation of bond energy. J. S.Afr. Chem. Inst., vol. 26. no. 3. 1973. pp. 94-105. BOEYENS. J.C.A., McDOUGALL, G.J., and SMIT. J.V.R. Crystallography study of the ammonium-potassium 12-molybdophosphate ion-exchange system. J. Solid State Chem., vol. 18. 1976. pp. 191-199. DE V1LLIERS. J.PR., and BOEYENS. J.C.A. Crystal structure of a calcium sulphate-urea complex. J. Cryst. Mol. Struct., vol. 5. 1975. pp. 215-226. •ERASMUS, C.S.. and BOEYENS, J.C.A. Crystal structure of the praseodymium 0-dikctonate of 2.2.6,6-tctramethyl-3,5-heptanedione. Prj(thd),;. Acta Crystalhgraphica, vol. B26,Pt 11. Nov. 1970. pp. 1843-1854. iitf NiM PUBLICATIONS • ERASMUS, C.S.. and BOEYENS, J.C.A. Crystal and molecular structure of tns (2,2,6,6 ietramethyl-3.5-heptanedionato)aquodysprosiumtlll),Dy(thd),H.O. J. Crvst. Mol. Struct., vol. 1. 1971. pp. 8^-91. HANCOCK, R.D., and EVERS. A. Formation constant of Pd(CH)i . Inorg. Chem., vol. 15.1976 pp. 995-996. HANCOCK, R.D , and FINKELSTEIN. N.P. n and .r-bonding in the stabilities of HANCOCK, R.D., FINKELSTEIN, N.P., and EVERS, A. Stabilities of the cyanide complexes of the monovalent group IB metal ions in aqueou.s solution. J. inorg. nucl. Chem., vol. .14. 1972. pp. 3474-3751. HANCOCK. R.D.. FINKELSTEIN, N.P . and EVERS. A. Ligand-field theory and metal-ligand force constants. Inorg. nucl. Chem. Lett., vol. 35. 1973. pp 2558-2561 HANCOCK. R.D., FINKELSTEIN, N.P.. and EVERS. A. Linear free energy relationship in aqueous complex-formation reactions of ibed'" metal ions. J. inorg. nucl. Chem., vol. 36. I 974. pp. 2539-2543. HANCOCK, R D.. FINKELSTEIN. N.P.. and EVERS. A. Some observations on a recent determination of the stability of the dicvanocuprated) ion. J. inorg nucl. Chem.. vol. 38. 1976, pp. 343-344. HANCOCK, R.D.. and MARSICANO. F. The chelate effect: a simple quantitative approach. J. Chem. Soc., Dalton Trans., no. 12. 1976. pp. 1096-1098. HANCOCK. R.D.. and MARSICANO. F. The linear free-energy relation in the thermodynamics of complex formation. Part I. Correlations involving enthalpy changes on complex formation of silveriD and mercury(il) with "soft' donor ligands. J. Chem. Soc., Dalton Trans., 1976. pp. 1832-1837. HANCOCK, tf.D., and MARSICANO, F. Parametric correlation of formation constants in aqueous solution. Part I. Ligands with small donor-atoms. Inorg. Chem., vol. 17. no. 3. 1978. pp. 560-564. HANCOCK, R.D.. and McDOUGALL, G.J. The role of electronic derealization over the chelate ring in stabilizing complexes of 2, 2 -bipyridyl. J. Chem. Soc., Dalton Trans., 1977. pp. 67-70. HANCOCK, R.D., and McDOUGALL, G.J. The affinity of lead(ll) for nitrogen-donor ligands. J. Coord. Chem., vol. 6. 1977. pp. 163-166. MARSICANO. F., and HANCOCK. R.D. A potentiometric and calorimetric study of the thermodynamics of formation of some of the complexes of the •MARSICANO. F , and HANCOCK. R.D. The linear free-energy relation in the thermodynamics of complex formation. Part 2. Analysis of the formation constants of complexes of the large metal ions silverih. mercuryui). and cadmium(lt) with ligands having soft and nitrogen-donor atoms. /. Chem. Soc., Dalton Trans., no. 3. 1978. pp. 228-234. •McDOUGALL.G.J.. HANCOCK. R.D.. and BOEYENS. J.C.A. Empirical force-field calculations of strain-energy .ontributions to the thermodynamics of complex formation. Part I: The difference in stability between complexes with five- and six-membcred rings. J. Chem. Soc., Dalton Tram., no. I I. 1978. p. 1438. MOODI.EY. K.G.andNICOL, M J. Kinetics of the reduction of platinumdV) by tindH and coppenh in aqueous chloride solutions. J. Chem. Sot., Datum Trans., no. 3. Mar. 1977, pp. 239-243. I IMS I NIMPUBIICATIONS POPE. L.E.. and BOEYENS. J.C.A. Crystal structures of S-renzylisothiouronium hcxachloroplatinatetIV) and tetrachloroaurateitll). / Cm/. Mol. Struct., vol. 5. no. 1. 1975. pp. 47-58. SCOTÍ. P.D.. GLASSER. D.. and NICOL. M.J. Thermal determination of the kinetics of the ironiitD-tindi) redox reaction in chloride solution. J. (.'hem. Soc. Farad. Trans, /.vol. 71. no. 7. 1975. pp. 1413-1421. SCOTT. P.D.. and NICOL. M.J. Kinetics of the non-oxidative dissolution of galena in acidic chloride solutions. Trans. Instn Min. Metall.. vol. 85. Mar. 1976. pp. C40-C44. SCOTT. P.D.. WILLIAMS. D.F.. and GLASSER. D. The thermal determination of liquid phase kinetics. S.Afr. J. Sti.. vol. 70. no. 1. 1974. pp. 10-12. •SMITH. R.P.. and WOODBURN, E.T. Prediction of multieomponent ion change equilibria for the ternary svstem SO| -NO;-Cl from data of binary systems AIChE J., vol. 24. no. 4. Jul. 1978. pp 577-588." Programme No. 502 Research and development of equipment for ore-dressing processes, and new concepts in ore-dressing (excluding flotation and comminution) I. Rrport No. Title Year 518 The prediction of gravity or inertial separation efficiencies from heavy-liquid tests and Tromp-type efficiency curves. An improved method 1969 2. Papers GOOLD. LA.. LIN. I.J.. LOVELL. V.M.. and FINKELSTEIN. N.P. Oil-levitation extr. tion: a variation of flotation. J. S.Afr. Inst. Min. Metall.. vol. 76, «pec. issue. Oct. 1975. pp. 132-134. KELEGHAN. W. Some potential applications of wet high-intensity magnetic separation. J. S.Afr. Inst. Min. Metall.. vol. 76, spec, issue. Oct. 1975. pp. 108-110. KELEGHAN. W.T.H. WHIMS for low-grade uranium. Nucl Active, no. 16. Jan. 1977. pp. 3-5. LEVIN. J. Mixing and sampling procedures used at the National Institute for Metallurgy, South Africa. SAMPLING IN THE MINERAL AND METALLURGICAL PROCESSING INDUSTRIES. Institution of Mining and Metallurgy. London, the Institution. 1973. pp. 28-37. LIN. I.J., and FINKELSTEIN. N.P. The application of magnetohydrostatic separation to metallurgical processes. J. S.Afr. Inst. Min. Metall., vol. 76. spec, issue. Oct. 1975. pp. II1-112. LOVEDA Y. B.K. The prediction of gravity or inertial separation efficiencies from heavy-liquid tests and Tromp-type efficiency curves. An improved method. Trans. Instn Min. Metall., vol. 79. no. 763. Jun. 1970. pp. C137-CI40. OVERBEF.K, P.W. An assessment of the efficiency of the Dryflo concentrator by the use of specific gravity markers. /. S.Afr. Inst. Min. Metall.. vol. 76. spec, issue. Oct. 1975. pp. 120-122. .1. Patent Physical separation of materials. S.Afr. Pal. 70/2765. 20th Apr.. 1970. 1117 NIM PUBLICATIONS F jgramme No. 503 Fundamental investigations of the simulation, optimization, and control of extractive-metallurgical processes and computation techniques 1. Reports V». Title Year 327 Information theory and the design of experiments 14hK ID25 An introduction to stochastic differential equations. Abbreviated lecture notes 1471 1454 A dynamic model for the extraction hank of Purlex plants 1472 1477 The control of Purlex plants 1472 2. Papery KING. R.P. Some problems in chemical reactor analysis with stochastic features. /. & /.( Lundamentals. sol. 4. no. I. Feb. 147U. pp 140-141 KING. R.P. Continuous !i;«v system with stochastic transfer functions. II. Solution by the associated Kolmogorov equation. Chem. Eriffnit Sci., vol. 2h. no. 5. Ma> 1471. pp 724-737 KING. R.P. Continuous flow systems with stochastic transfer functions. Ill Stationary operation with chemical reacoon. PROCEEDISGS AM) ESTERS ALIOSAL SYMf'OSH \f (>\ CHEMICAL REACTrO\ ESGISEERISG. Amsterdam. Klsevier Publishing Co.. 1472 pp B4-35-B4-4f>. KING. R.P. Applications of stochastic differential equations to chemical engineering problems — an introductory review. Chan. E.npxii Com/nun., vol I. no 4 Nov 1474. pp. 2. i-237 KING. R.P.. GI.ASSKR. D.. and STONK. S.I . Ihc optimal catalyst-concentration profile for bifunctionai catalysts. Journal of Optimization Theory and Application, vol. ID. no. 2. Aug 1472. pp 44-108. KING. R.P.. WOODBURY K.T.. COI.BORN. R P.. KDWARDS. R.. and SMITH. W.K. Dynamic U'sting of mineral processing equipment using radioisotopes \CCI.LAR IECH\IQl'ES A\D UIMRAI RESOl RCES International Atomic Energy Agency. Vienna the Agency. Il >fi4 pp. I I 7- I 27. PAYMKR. J.C.. I OVKDAY. B.K.. and ROBINSON. C.G. Optimization studies on the design ol a processing plant for a large mining venture API'LIC ALIOS OL COMPILER \f El HODS IS THE MISERAE ISDLSTRY. Salanwri. M.D.G.. and Lancaster. /G. teds.). Johannesbuig. South African Institute of Mining and Metallurgy. ll>73. pp. I7l-I7l>. Programme No. 504 Research and development of analytical techniques and methods for extractive metallurgy I. Reports So. Title Year 158 Aerosol formation with ;i high-speed spinning surface Il'h7 2M A new detector unit for the Icchtron model A A3 atomic-absorption spectrophotometer I '"'7 NIM PUBLICATIONS o Title Year 439 The determination of free acid in the presence of hydrolysable cations 1968 465 The determination of aminoid nitrogen in organic compounds by the Kjeldahl method 1969 497 The determination of ferric iron using Titron 1969 502 The volumetric determination of chloride and bromide using mercurous perchlorate 1969 965 The spectrophotometric determination of phosphate in leach residues and solutions 1970 1049 Exchange visit to the Institut fur Spektrochemie und Angewandte Spektroskopie in Dortmund, West Germany 1970 1106 Computerization of atomic-absorption data with the Olivetti Programma 101 1970 1163 The computer programming of atomic-absorption measurements on the Olivetti Programma 101 1970 1172 A visit to Outokumpu Oy Research Laboratory in Finland 1970 1257 Aspects of the Seventh X-ray Analytical Conference. Durham. September 1970 1971 1305 The determination of total sulphur in the dust from nylon thread 1971 1467 The spectral analysis of solutions. 1. The analysis of rare-earth minerals 1972 1556 The spectral analysis of solutions. 2. The analysis of leach liquors, concentrates, slags. and residues 1973 1581 The computer calculation, from fundamental parameters, of influence coefficients for X-ray spectrometry 1974 1592 The determination of line intensities in the presence of interfering spectra in dispersive X-ray-fluorescence spectrometry 1974 1607 The analysis of ion-exchange resins by X-ray fluorescence 1974 1621 Correction of matrix effects in the analysis of solutions by X-ray-fluorescence spectrometry 1974 1784 A single-standard calibration method for use in analysis by X-ray-fluorescence spectrometry 1976 1788 A computer programme for emission-spectrographic calculations 1976 1825 The full automation of a Philips 1220 X-ray spectrometer 1976 1873 The rapid reduction of gamma-ray spectra with a desk-top calculator 1977 1907 The application of the induction-coupled plasma system to spectral analysis 1977 1933 The determination of trace-elements by thin-film X-ray-fluorescence spectrometry. and its application 'n zirconium 1977 NIM PUBLICATIONS Vo. Title Yeur • 1936 The analysis of mincralogical and metallurgical materials. A guide to the analytical techniques and instrumentation available at the National Institute for Metallurgy 1978 • 1984 The commissioning of the AEI MS702 mass spectrometer 1978 • 1991 The determination, by atomic-absorption spectrophotometry, of europium in phosphoric acid and in rare-earth oxides 1978 • 1992 The use of optical emission spectrometn for the determination of t-npurities in metals 1978 •2002 The spectrochemical determination of phosphorus, magnesium, and iron in phosphate rocks and sulphuric acid leach liquors 1979 •2006 An examination of procedures for the analysis of powders by atomic-absorption spectrophotometry • 979 2. Papers AUSTEN. C.E.. and STEELE. T.W. The computer calculation, from fundamental parameters, of influence coefficients for X-ray spectrometry. ADVANCES IN X-RAY ASALYSIS. Pickles. W.L.. Barrett, C.S.. Neakirk. J.B.. and Rund. CO. (eds.). London. Plenum Press. 1975. vol 18. pp. 362-371. STEELE. T.W.. nnd GUERIN. B D A new graphite rod for flameless atomic-absorption spectroscopy Analyst, vol. 97. no. 1150. Jan. 1972. p. 77. .?. Other technical publication Handbook of interference effects encountered in atomic-absorption spectrophotometry at the National Institute for Metallurgy. 1978. 137 pp. Programme No. 505 Preparation of international and secondary reference materials for extractive metallurgy I. Report. No. Title Year 331 A literature survey of the preparation of standard rock samples 1968 332 Collection and preparation of standard rock samples 1968 1322 The preparation and analysis of minerals for use as reference material 1971 1351 Preliminary report on the analysis of the six Nl M R(H geoehemical standard samples 1972 1552 The preparation and analysis of minerals for use as reference material. Progress report no. 2 1973 1609 An interlaboratory analysis of two ferrochromium slags 1974 1649 The establishment of preferred values for a series of fluorspar samples 1974 I in NIM PUBLICATIONS No. Title Year 16% The preparation and certification of a reference sample of a precious metal ore 1975 1719 An evaluation of the X-ray-fluorescence analysis of rocks and silicates under routine conditions 1975 1762 The determination, by instrumental neutron-activation analysis, of some elements in the NIMROC standard reference materials 1975 1803 The preparation and analysis of minerals for use as reference material. Progress report no. 3 1976 1807 The establishment of preferred values for a series of rare-earth samples 1976 Í945 Analyses of the NIMROC reference samples for minor and trace elements 1978 • 1965 Analyses, by several laboratories, of three ferromanganesc slags 1978 • 1972 The preparation and certification of a reference sample of high-carbon ferrochromium 1978 • 1976 The preparation and certification of two samples of chromium ore 1978 • 1977 The preparation and certification of a reference sample of hematite ore 1978 • 1978 The preparation and certification of a reference sample of magnetite ore 1978 2. Papers ELLIS. P.J.. COPEl.OWITZ, I., and STEELE, T.W. The estimation of the mode by the dominant cluster method. Geostandards New-letter, vol. I. no. 2. Oct. 1977. pp. 123-130. •STEELE. T.W.. WILSON, A.. GOUDVIS, R.. ELLIS. P.J.. and RADFORD. A.J. Trace element data (1966-1977) for the six NIMROC reference samples. Geostandards Newsletter, vol.2,no. I. Apr. 1978. pp. 71-106. Programme No. 506 Development of mineralogical techniques and methods for extractive metallurgy 1. Report* No. Title Year 103 Techniques for the examination of inorganic compounds on an infrared spectrograph 1966 105 Report on overseas visit 1966 268 A power-failure safety device and operational aid*for the electron microprobe 1968 2. Papers GASPARRINI, E. Electron-microprobe quantitative analysis by energy-dispersive spectrometry. PROCEEDINGS, ELECTRON MICROSCOPY SOCIETY OF SOUTHERN AFRICA, PRETORIA CONFERENCE. Durban, the Society. 1975 vol. 5. pp. 121-122. ii I MM PUBLICATIONS GASPARRINI. E. The energy-dispersive spectrometer: a new tool of investigation for the earth scientist. Miner. Sti. fJw^nj». vol. 8. no. i. Jan. 1976. pp. 3-22. HIEMSTRA. S.A. Photomicrography Miner. Svi. Engng. vol. I. no 2. Jul. lMf>*J. pp 34 50. LIEBENBERG. W.R. Mineralogy and the metallurgist. Miner Sa. Engng. vol. 2. no 4. Oct ll>70. pp. 3-23. MIHÁLIK. P The electron microprobe X-ray analysis. S.Afr. chem. I'rocew., vol. 2. no 2 Apr -May 1967. pp. 37-12. MIHÁLIK. P. An aid for the alignment, positioning, and checking of the beam in the electron microprobe. Lah. Practice, vol. 19. no. 3. Mar. 1970 p. 2X8. MIHÁLIK. P.. and HIEMSTRA. S.A Apparatus permitting visual observation during the vacuum-deposition of thin films. Lab. Prac'iir, vol. 21. no. 4. Jan. 19^2. pp. 29-30 VON RAHDEN. V.V.R. A modified halide-disc holder tor infrared spectrometry. J \cient. Imirum.. vol.44. 1967. p. 168. Programme No 507 Development of nuclear-activation techniques as methods for the analysis of minerals and metals I. Reports \o. Title Year 41 Table of the isomeric states of stable nuclides 1966 SO The resolution of photopcaks obtained from the products of stable nuclides irradiated by neutrons 1966 152 The determination of beryllium by irradiation with gamma rays 1967 162 The growth of radioactivity in uranium after separation from its daughter products 1967 177 Compensating for flux variation in neutron-activation analysis 1967 236 The determination of some of the major constituents of ores and minerals by fast-neutron activation analysis 1967 445 The use of californium-252 fission neutron sources 1969 474 The l.AEA Conference on the Use of Nuclear Techniques in the Prospecting and Development of Mineral Resources 1969 530 The measurement of l4MeV neutron fluxes from a neutron generator 1969 889 fhe simultaneous determination, by instrumental thermal-neutron activition analysis, of some selected trace elements likely to be present in lunar matcii.! 1969 891 Calibration of the 'Universal Voltronics' power suppK for the neutron generator manufactured by Accclcra'.ors Incorporated 1969 967 Automatic timing of the neutron-generator counting station 1970 II.' NIM PUBLICATIONS No. Title Year 987 Rhythmic-activation analysis 1970 1005 Modifications to the Intertechnique 4000-channel analyser 1970 1013 The instrumental neutron-activation analysis of samples taken at different levels of the E.R.P.M. Mine 1970 1476 A magnetic-tape-oriented system for data reduction in neutron-activation analysis 1972 1563 Neutron-activation analysis of samples from the Kimberley Reef conglomerate 1973 1625 The determination of uranium and thorium by the use of delayed neutrons 1974 1636 Trace elements in diamonds from the Premier. Finsch, and Jagersfontein Mines, and their petrogenetic significance 1975 1638 The determination of trace elements in natural diamonds by instrumental neutron-activation analysis 1975 1639 The determination, by l4MeV neutron-activation analysis, of small amounts of oxygen and silicon in diamonds 1974 1652 The identification of diamonds from Premier, Finsch, and Jagersfontein Mines, by statistical analysis of data obtained froT instrumental neutron-activation analysis 1975 1670 Neutron-activation analysis of routine mineral-processing samples 1974 1703 The geochemistry of some selected South African I imber!ites and associated heavy minerals 1976 1749 Epithermal-neutron-activation analysis for uranium in Barberton and Bushveld granites 1975 1873 The rapid reduction of gamma-ray spectra with a desk-top calculator 1977 1874 Activation analysis and classification to source of sa nples from the Kimberley Re» f conglomerates 1977 1917 The instrumental neutron-activation analysis of granites from the Bushveld Complex 1978 1928 A liquid-nitrogen monitor for lithium-drifted germanium detectors 1977 2. Papers BIBBY. D.M., and RASMUSSEN, S. Reactor neutron flux monitoring with iron foils. Radiochem. radioanalyt. Lett., vol. 9, no. 1. 1972. pp. 1-8. BIBBY, D.M.. and RASMUSSEN. S. Performance of a counting head for an automatic sample changer. Radiochem. radioanalyt. Lett., vol. 14, no. 1. 1973. pp. 9-15. BIBBY, DM., and SELLSCHOP, J.P.F. The determination of oxygen and silicon in diamonds by 14MeV activation analysis. J. radioanalyt. Chem., vol. 22. 1974. pp. 103-111. •ERASMUS, C.S , FESO, H.W.. KABLE. E.J.D.. RASMUSSEN. S.E., and SELLSCHOP. J.P.F. The NIMROC samples as reference materials for neutron activation analysis. J. radioanalyt. Chem., vol. 39. 1977. pp. 323-334. in N1M PUBLICATIONS •ERASMUS. C.S.. NOVAK, E.. and SELLSCHOP. J.P.F. The determination of copper in native gold hy radiochemical separation and neutron-activation analysis. ABSTRACTS, 5TH SYMPOSIUM ON RECENT DEVELOPMENTS IN ACTIVATION ANALYSIS. I7TH-2IST JULY 1978, ST. CATHERINES COLLEGE. OXFORD. Geel (Belgium). Central Bureau of Nuclear Measurements. Joint Research Centre of the European Communities, pp. 126(a. b, c. d). •ERASMUS. C.S.. SARGEANT. J.. SELLSCHOP. J.P.F.*. and WATTERSON. J.I.W. Multielement analysis of air and water pollutants in gold mines by thermal and epithermal neutron activation. METHODS AND STANDARDS FOR ENVIRONMENTAL MEASUREMENT. PROCEEDINGS OF THE8TH IMR SYMPOSIUM HELD SEPTEMBER 20-24. Í976. GAITHERSBURG. Ml). Kirchoff. W.H. (ed). Washington. National Bureau of Standards Special Publication 4W. pp. 129-136. •ERASMUS. C.S.. SELLSCHOP. J.P.F.. BIBBY. DM. FESO. H.W . KABLE. E.J.D.. KEDDY. R.J.. HAWKINS. DM.. MINGAY. D.W . RASMUSSKN. S.E.. RENAN. M.J.. and WATTERSON. J.I.W. Natural diamonds — major, minor and trace impurities in relation to source and physical properties. J. radioanaht. Chem.. vol. 38. 1977. pp. 133-'46. FESO. H.W.. BIBBY. DM.. SELLSCHOP. J.P.F.. and WATTERSON. J.I.W. The determination n trace-element impurities in natural diamonds by instrumental neutron-activation analysis. J. radioanaht Chem., vol. 17. 1973. pp. 195-216. FESO. H.W.. KABLE. E.J D., and GURNEY. J.J. Aspects of the geochemistry of kimberlites from the Premier Mine and other selected South African occurrences with particular reference to the rare earth elements. PHYSICS AND CHEMISTRY OF THE EARTH, Ahrens, L.H., Damon. J.B.. Duncan, A.R.. and Erlank, A.J. (eds). Oxford. Pergamon. 1975. vol 9. pp. 687-707. GURNEY. J.J.. FESO, H.W.. and KABLE. E.J D. Clinopyroxene-ilmenite xenolitesfrom kimberlites. LESOTHO KIMBERLITES. Nixon, PH. (ed.). Maseru. Lesotho National Development Corporation. 1973. pp. 238-254. HAWKINS. D M.. and RASMUSSEN, S.E. Use of discriminant analysis for the classification of strata in sedimentary successions. Math. Geol. vol. 5, no. 2. 1972. pp. 163-177. KABLE. E.J.D.. FESO. H.W., and GURNEY. J.J. The significance of interelement relationships of some elements in South African kimbcrlites. PHYSICS AND CHEMISTRY OF THE EARTH. Ahrens, L.H., Dawson, J.B., Duncan, A.R., and Erlank, A.J. (eds.). Oxford, Pergamon. 1975. vol. 9. pp. 709-734. KNIGHT, A. Neutron activation analysis. S.Afr. F.iufr, vol. 58. no. 585. Feb. 1967. pp. 37. 39 41. RASMUSSEN. S.E.. SELLSCHOP. J.P.F.. FESO. H.W.. and HAWKINS, DM. Characterization of sedimentary strata using trace element patterns. PROCEEDINGS TWELFTH INTERNATIONAL SYMPOSIUM ON THE APPLICATION OF COMPUTERS AND MATHEMATICS IN THE MINERALS INDUSTRY. Johnson, T.B., and Gentry, T. W (eds.). Colorado. Colorado School of Mines. 1974. pp. D41-D56. SELLSCHOP. J.P.F.. BIBBY. DM, ERASMUS, C.S.. and MINGAY, D.W. Determination of impurities in diamond by nuclear methods. DIAMOND RESEARCH 1974. London. Industrial Diamond Information Bureau. 1974. pp. 43-50. UKEN. E-A. Neutron-activation analysis. Miner. Sri. Engn%. vol. 2, no. 2. Apr. 1970. pp. 24-34. UKEN. E-A.. and WILLIAMSON. J.E. Radioactivity build-up of freshly separated radium from the uranium, actinium and thorium series. Radiochim. Acta, vol. H. no I. 1967. pp. 60-63. WATTERSON. J.I.W. Optimization of irradiation and decay times in nuclear activation analysis. J. radioanaht. Chem., vol. 26. 1975. pp. 135-150. 114 NIM PUBLICATIONS WATTERSON. J I.W.. and HAWKINS. DM. Multivariate techniques for the classification of granites. PROCEEDINGS TWELFTH INTERNATIONAL SYMPOSIUM ON THE APPLICATION OF COMPUTERS AND MATHEMATICS IN THE MINERALS INDUSTRY. Johnson, T.B.. and Gentry, D.W. (eds). Colorado. Colorado School of Mines. 1974. pp. D57-D76. ZANDERS, J. A.J.. BIBBY. DM., and RASMUSSEN. S.E. A simple automatic sample changer for the gamma-ray counting of reactor-irradiated samples. J. Phys. E:scient. Instrum., vol.6. 1973. pp. 973-975. Programme No. 506 Research and development of equipment for hydrometallurgical and electrometallurgies! processes 1. Reports No. Title Year 367 Felix Project: imperfect mixing in continuous leaching at Buffelsfontein uranium plant 1968 510 The performance of a clarifier subject to a low-intensity turbulence 1969 517 Radiotracer tests on the pachucas on the uranium plant at Western Reefs Mine 1969 898 The development of a computer programme for countercurrent operations involving liquid-solid separations 1970 !693 Research at the National Institute for Metallurgy on the engineering aspects of copper electrowinning 1975 1754 A new three-dimensional anodic electrode for reduced power consumption during the electrowinning of metals 1975 1782 ITie application of air-sparging techniques to industrial electrodeposition of zinc from acidic zinc sulphate solutions 1976 2. Papers KING, R.P. WOODBURN, E.T.. and TE RIELE. W.A.M. The dispersion of material in slowly moving fluids. Can. J. chem. Engng, vol. 50, no. I. Feb. 1972. pp. 3-8. LOVEDAY. B.K. A model for the leaching of non-porous particles. J. S.Afr. Inst. Min. Metali, vol. 76, no. 2. Sep. 1975. pp. 16-19. ORMROD. G.T.W. The control of aqueous ammonia concentrations by a thermal method. J. CHEMSA, Dec. 1975. pp. 284-286. J. Patents Improvements in and relating to the contacting of liquids and particulate solids. S.Afr. Pat. 69/5623.1M\\ Aug.. 1970. (Also: S.W. Afr. Pat. 70/0010. 28th Aug., 1970.) Contacting liquids and solids. S.Afr. Pat. 71/3140, 5th May, 1972. in N1M PUBLICATIONS Contacting liquids and solids in countercurrent. S.Afr. Pat. 71/3139, 5th May. 1972. (Also: Austral. Pat. 472.709. 17th May. 1976; Belg. Pat. 783.407 12th May. 1972; Brit. Pat. 1.399.473. 11th May. 1972; Can. Pat. 978.722. 12th May. 1972; Fr. Pat. 72 .714f>. 12th May. 1972; Ital. Pat. 955497. 13th May. 1972; Jap. Pat. 479*»4/72. 15th May. 1972; Luxembourg Pat. 65.370, 16th May. 1972; Rhodes Pat. 200/72. 5th May. 1972; S.W. Afr. Pat. 72/051. 5th Mav. 1972; U.S. Pat. 3.957.635. 8th May. 1972; H'. Ger. Pat. P.22 23 627.7. 12th May. 1972.) Equipment for contacting liquids and solids. S.Afr. Pat. 72'4328. 20th Jun.. 1973. (Also: S.W. Afr. Pat. 73/064. 20th Jun.. 1973.) Improved method of measuring rates of dissolution. S.Afr. Pat. 72/8807. 8th Jan.. 1974. (Also: S.W. Afr. Pat. 74/7. 8th Jan.. 1974.) The determination of mineral concentrations in slurries thereof. S.Afr. Pat. 75/6387. 6th Oct.. 1976. (Also: S.W. Afr. Pat. 76/0084. 5th Oct.. 1976.) 4. Other technical publications Continuous ion exchange in hydrometallurgy. Technical Bulletin no. I. 1976. 16 pp. [superseded by Technical Bulletin no. 2.] •The NIMCIX contactor. Continuous ion exchange in hydrometallurgy. Technical Bulletin no. 2. Aug. 1978. 10 pp. Programme No. 509 Research and development of equipment for pyremetatturgical processes 1. Report No. Title Year 1521 The dissipation of electrical power in the burden of a submerged-arc furnace 1973 2. Papers CHANNON. W.P., UROUHART. R.C.. and HOWAT. D.D. The mode of current transfer between electrode and slag in the submerged-arc furnace. /. S.Afr Inst. Min. Me tali. vol. 75. no. 1. Aug. 1974. pp. 4-7. HAINES, A.K., KÍNG. R.P., and WOODBURN. E.T. The interrelationship between bubble motion and solids mixing in a gas-fluidized bed. AlChE, vol. 18. no. 3. May 1972. pp. 591-599. UROUHART. R.C.. JOCHENS. PR . and HOWAT. D.D The dissipation of electrical power in the burden of a submerged-arc furnace. .? 1ST ELECTRIC FURNACE CONFERENCE PROCEEDINGS. Metallurgical Society ofAlME. New York, AIME. 1973. vol. 31. pp. 29-Í8. Programme No. 510 Research and development of instruments and associated equipment for the measurement and control of extractive-metallurgical processes I. Reports No. Tii!'. Year 67 The application of silicon controlled rectifiers to instruments using half-cycle heating 1966 IK. NIM PUBLICATIONS ,\V>. Title Year 1 Half-cycle heating applied to an X-ray powder camera 1966 477 Balanced-temperature analysers 1969 489 Thermal analysis. Overseas visit 1969 1267 The development of an electrodeless cond~ iivity meter 1971 1526 Heat of solution as a control of aqueous-ammonia concentration 1973 1533 Fields of application for dispersive and non-dispersive X-ray-fluorescence instruments 1973 1591 The inductive measurement of conductivity in slaps 1974 1640 A semi-automatic titrimeter for cyanide analysis 1974 1778 An apparatus for the automatic measurement of current efficiencies during the electrodeposition of nickel in chloride media 1976 1818 A microprocessor-based system to control the feed to a ferro-alloy furnace 1976 1876 The determination, by ultrasonic measurement, of the mud level in a thickener and the resin level in an ion-exchange column 197"' 1884 The use of capacitance probes for the determination of interfaces 1977 1885 A data-logging system for a submerged-arc ferro-alloy furnace 1977 1939 An industrial microprocessor system 1978 • 1998 Electrode response to the addition of zinc during the cementation of gold 1979 •2003 An electrodeless conductivity meter of improved sensitivity and reliability 1979 2. Papers •GRAY, G.T.. and POTGIFTER, J.H. Experience with the introduction of microprocessor systems into industry. Pulse, Jan. 1979. pp. 18-20. •GRAY, G.T., and RODD. M.G. The development of an extended macro-assembler for the production of microprocessor software. Trans. S.Afr. Inst. Klec. Engnrs, vol. 69. no. 7. Jul. 1978. pp. 201-205. ORMROD, G.W.T. The control of aqueous ammonia concentrations by a thermal method. Electron. Instrumn, vol. 6, no. 8. Aug. 1975. pp. 73, 77. 7». ORMRC 0. G.T.W. The control of aqueous ammonia concentrations by a thermal method. /. CHIMSA, Dec. 1975. pp. 284-286. ORMROD. G.T.W.. and SOMMER. G. Analytical instrumentation for control of the leaching process. AUTOMATION IN MINING. MINERAL ANT) METAL PROCESSING. Lancaster. EH. (ed.). Pretoria, South African Council for Automation and Computation, 1977. pp. 521-530. SOMMER. (i. Temperature measurement with thermocouples. Electron. Instrumn. vol. 2. no. I. Apr. 1971. pp. 1-5. 1 17 NIM PUBLICATIONS SOMMER, G., and JOCHENS P.R. Techniques of micro-thermal analysis based on a thermocouple as heating source and specimen holder. Miner. Sci. Engng, vol. 3. no. 1. Jan. 1971. pp. 3-16. SOMMER. G.. JOCHENS. PR., and HOWAT. D.D Solid state circuitry for a microdifferential thermal analyser. J. Phys. E: sdent. Instrum., vol. 1. 1968. pp. 1116-1118. SOMMER, G.. and MILLER. R.P. A hot stage microscope incorporating a differential thermal analysis unit. J. scient. Instrum., vol. 43, no. 5. May 1966. pp. 293-297. SOMMER. G., and SANDER. H.W. Balanced temperature analysers. 2nd INTERNATIONAL CONFERENCEON THERMAL ANALYSIS. 1968. Schnenker, R.F.,andGarn, P.D. (eds.). New York. Academic Press, 1969. vol. 1. pp. 163-175. ZANDERS. J.A.J. Single-ended differential instrumentation amplifier. Electron. Instrumn, vol. 4. no. II. Mar. 1974. pp. 2-3 ZANDERS.J.A.J. An electronic differential precision thermometer. Electron. Instrumn, vol.4,no. 12 Apr. 1974. pp. 24-25. 28. 3. Patents Apparatus and method for differential thermal analysis. S.Afr. Pal. 67/5680. 16th Oct.. 1968.(Also: Brit. Pat. 4403/68. 17th Sep.. 1968; U.S. Pat. 750.623. 11th Jul.. 19f>9; W. Ger. Pat. P. 17 98 283.1. 20th Sep.. 1969.) Improved method of measuring rates of dissolution. S.Afr. Pat. 72/8807. 8th Jan.. 1974. (Also: .V. W. Afr. Par 74/7. 8ih Jan.. 1974.) Improvements relating to the controlling of processes. S.Afr. Pat. 73/1213. 21st Feb.. 1974. Programme No. 511 General studies of electrochemistry in extractive metallurgy I. Reports No. Title Year 16 The rotating-disc system and its applications in the dissolution of gold 1966 1509 The instrumentation developed fur electrochemical studies of the leaching of uranium dioxide 1973 1778 An apparatus for the automatic measurement of current efficiencies during the electrodcposition of nickel in chloride media 1976 1796 The mechanism of the elcctrodeposition and dissolution of nickel from chloride media 1976 1799 An electrochemical investigation of copper cementation on iron 1976 1800 An electrochemical investigation of the dissolution and passivation ol platinum in acid solutions 1976 1804 The electrodeposition of nickel from ammoniacal solutions 1976 1858 The kinetics and mechanism of the non-oxidative dissolution of some iron sulphides in aqueous acidic solutions 197ft MX NIM PUBLICATIONS :Vo. 7«/«* Year 1859 Increased current efficiency during electrodeposition of manganese from sulphate electrolytes 1976 1880 The electrochemical reduction of silver chloride and its application to the refining of silver 1977 1906 An automated instrument for measuring the effects of impurities on cathodic-current efficiency during the electro* inning of zinc 1977 2. Papers NICOL. M.J. The new electrochemistry and its part in a new technology. Probe 71-2. 1972. pp. 23-26. NICOL. M.J Mechanism of aqueous reduction of chaleopvrite by copper, iron and lead. Trans. Instn Min. Metall.. vol. 84. 1975. pp. C206-C209. •NICOL. M.J.. SCHALCH. E.( BALESTRA. P.. and HEGEDUS. H. A modern study of the kinetics and mechanism of the cementation of gold. J. S.Afr. Inst. Min. Metal!., vol. 79. no. 7. Feb. 1979. pp. 191-198. • PAUL. R.L. A circuit design for a motor-speed controller of high precision. Electrochim. Acta. vol. 23. no. 10. Oct. 1978. pp. 991-994. PHILIP. HI., and NICOL. M.J Underpotential deposition and its relation to the anomalous deposition of metals in alloys. J. Electroanalyt. Chem., vol. 70. 1976. pp. 233-237. SAUNDERS. A.P.. PHILIP. I., and MARTIN. J.P. An automated instrument for the determination of the effects of impurities on the cathodic current efficiency during the electrowinning of zinc. AUTOMATION IN MINING. MINERAL AND METAL PROCESSING. Lancaster, E.G. led.). Pretoria. South African Council for Automation and Computation. 1977. pp. 531-542. •SCHALCH. E.. and NICOL. M.J. Electrochemical investigation of copper cementation on iron. Trans. Instn Min. Metall., vol. 87. Mar. 1978. pp. CI6-C22. SCOTT, P.D.. and NICOL. M.J. The kinetics and mechanisms of the non-oxidative dissolution of metal sulphides. TRENDS IN ELECTROCHEMISTRY. Bockris, J.O.M., Rand, D.A.J., and Welch. B.J. feds.). New York. Plenum Press. 1977. pp. 303-316. J. Patent Improved method of measuring rates of dissolution. S.Afr. Pal. 72/8807. 8th Jan., 1974. (Also: S.W. Afr. Pat. 74/7, 8th Jan., 1974.) Programme No. 512 Engineering studies of the flotation process and equipment, including modelling, scale-up, optimization, and control 1. Reports No. Title Year 996 An improved distributed-parameter model for the kinetics of mineral flotation 1970 1436 A computer programme for the simulation of the performance of a flotation plant. Revised report 1973 11'i MM PUBLICATIONS No. Title Year 151? Computer-controlled flotation plants in Canada and Finland 1973 1553 Characterization of the flotation properties of fluorspar from small-scale batch and pilot-plant tests 1973 1562 Application of a flotation model to an industrial plant 1973 1567 Estimation of the parameters in the distributed-constant flotation model 1974 1568 A computer programme for the estimation of parameters in flotation 1973 1573 \ pilot-plant investigation of a flotation model 1974 1753 Full-scale flotation-plant data for modelling purposes 1975 1847 A pilot-plant investigation of a kinetic model for flotation 1976 2. Papers ENGELBRECH. J.A.. and WOODBURN. E.T. The effects of froth hei'ht. aeration rate, and gas precipitation on flotation. J. S.Afr. Inst. Min. Metall., vol. 76. spec, issue. Oct. 1975. pp. 125-131. KING. R.P. Flotation research work of the NIM Research Group, and the Department of Chemical Engineering, University of Natal. J. S.Afr. Inst. Min. Metall.. vol. 72. no. 9. Apr. 1972. pp. 235-345. KING. R.P. Model for the design and control of flotation plants APPLICATION OF COMPUTER METHODS IS THE MINERAL INDUSTRY. Salomon, M.D.G., and Lancaster, F.H. (eds). Johannesburg. South African Institute of Mining and Metallurgy. 1973. pp. 341-350. KING, R.P. On-line digital computer control of slurry conditioning in mineral flotation. Automatka. vol. 10, no. I. Jan. 1974. pp. 5-14. KING, R.P. Simulation of flotation plants. Trans. Soc. Min. Engrs AIME, vol 258. no. 4. Dec. 1975. pp. 286-293. •KING. R.P. A pilot-plant investigation of a kinetic model for flotation. J. S.Afr. Inst. Min. Metall., vol 78. no. 12. Jul. 1978. pp. 325-338. KING. R.P., HATTON, T.A.. and HULBERT. DO. Bubble lo. ding during flotation. Trans. Instn Min. Metall., Sect. C. vol. 83. no. 811. Jun. 1974. pp. CI 12-CI15. LOVEDAY, B.K. Analysis of froth flotation kinetics. Trans. Instn Min. Metall., vol. 75. Sec C. Sep. 1966. pp. 219-225. LOVF.DAY, B.K.. and MARCHANT. G.R. Simulation of multicomponent flotation plants. APPLICATION OF COMPUTER METHODS IN THE MINERAL INDUSTRY Salomon, M.D.G.. and Lancaster, F.H. (eds.). Johannesburg. South African Institute of Mining and Metallurgy. 1973. pp. 325-33». WOODBURN, E.T.. KING. R.P. BUCHAI TKR. F.M.. and PIPER. S.F. Integrated grinding and flotation control-computational problems in an optimum decision making model. A DECADE OF DIGITAL COMPUTING IN THE MINERAL INDUSTRY Weiss, A. led.). New York. AIME. I9f>9. pp. 695-728. WOODBURN. E.T.. KING. R.P.. and COLBORN. R.P. The effect of particle si/e distribution on the performance of a phosphate flotation process. Metall. Trans., vol. 2. no, 11. N.iv. ! l>71. pp. 3 163-3174. i:i) NIM PUBLICATIONS Programme No. 513 Development of solvent-extraction, ion-exchange, and other reagents for hydrometalkjrgy I. Reports No. Title Year 1793 The kinetics of mechanism of solvent extraction of copper by LIX 64N and KELEX 100 1976 1828 y-picoline adducts of the nickel, copper, and zinc chelates of 2-thenoyltrifluoroacetone 1976 1853 Chloromethylation of polystyrene resins 1977 1856 A study of model systems in anion exchange 1977 1897 A study of aggregation in the organic phase of solvent extraction systems and its influence on the extraction process 1977 1935 The construction and testing of a small mixer-settler for use in the laboratory 1977 1947 The cation- and anion-exchange behaviour of various base-metal chlorides in polar organic solvents 1978 2. Papers BOEYENS. J.C.A., McDOUGALL, G.J., and SMIT, J.V.R. Crystallography study of the ammonium-potassium 12-molybdcphosphate ion-exchange system. /. solid State Chtm., vol. 18. 1976. pp. 191-199. •FLEMING, C.A., NICOL. M.J., HANCOCK, R.D.. and FINKELSTEIN, N.P. The kinetics of the extraction of copper by LIX65N and the catalytic role of LIX63 in this reaction. J. appl. Chem. Biotechnol., vol. 28. 1978. pp. 443-452. MARSICANO, F., and HANCOCK, R.D. A potentiometric and calorimetric study of the thermodynamics of formation of some of the complexes of the Programme No. 514 General chemical studies of high-temperature processes in extractive metallurgy J. Patent Apparatus and method for differential thermal analysis. S.Afr. Pat. 67/5680.16th Oct., 1968. (Also: Brit. Pat. 4403/68. 17th Sep., 1968; U.S. Pat. 750,623,11 th Jul., 1969; W. Ger. Pat. P. 17 98 283.1, 20th Sep., 1969.) MM PUBLICATIONS Programme No. 515 Engineering studies of comminution and of associated classification processes and equipment, including modelling scale-up, optimization, and control 1. Reports No. Title Year 232 A comparison of open-circuit and closed-circuit grinding for the control of slime formation 1967 416 Comminution kinetics: batch tests in small mills, and model development 1968 996 An improved distributed-parameter model for the kinetics of mineral flotation 1970 1436 A computer programme for the simulation of the performance of a flotation plant. Revised report 1973 1517 Computer-controlled flotation plants in Canada and Finland 1973 1553 Characterization of the flotation properties of fluorspar from small-scale batch and pilot-plant tests 1973 1562 Application of a flotation model to an industrial plant 1973 1567 Estimation of the parameters in the distributed-constant flotation model 1974 1568 A computer programme for the estimation of parameters in flotation 1973 1573 A pilot-plant investigation of a flotation model 1974 1753 Full-scale flotation-plant data for modelling purposes 1975 2. Paper* BARKER, I J. and KING. R.P. A real-lime recursive filter applied to a milling circuit to estimate particle-size distributions. AUTOMATION IN MINING. MINERAL AND METAL PROCESSING, Lancaster, F.H, (ed.). Pretoria, South African Council for Automation and Computation, 1977. pp. 263-275. GUEST, R.N. A laboratory investigation of the importance of the circulating load in the control of particle-size distribution. /. S.Afr. Mech. Engr, vol. 22, no. 2. Feb. 1972. pp. 46-51. KING, R.P. An analytical solution to the batch-comminution equation. J. S.Afr. Instn Min. Metali, vol. 73, no. 4. Nov. 1972. pp. 127-131. LIN, I.J.. NADIV. S.. and GRODZIAN. D.J.M. Changes in the stale of solids and mechano-chemical reactions in prolonged comminution processes. Miner. Sci. Engng, vol. 7. no. 4. Oct. 1975. pp. 314-336. LOVEDAY.B.K. An analysis of comminution kinetics in terms of size-distribution parameters. J. S.Afr. Inst. Min. Metall, vol. 68. no. 3. Oct. 1967. pp. 111-131. LOVEDAY. B.K. Pilot-plant testing and scale-up of autogenous milling. GRINDING - THEORY AND PRACTICE. Johannesburg. South African Institute of Mining and Metallurgy. Vacation School 8th-l2th Aug.. 1977. pp. 88-97. NIM PUBLICATIONS LOVEDAY. B.K. Control of milling circuits — definition of aims. GRINDING - THEORY AND PRACTICE. Johannesburg. South African Institute of Mining and Metallurgy. Vacation School 8th-12th Aug.. 1^77. pp. 111-122. LOVEDAY. B.K.. and TOLM AY. A.T. The development of a mathematical model for large-scale mills. CHEMECA 70. Australian Institute of Chemical Engineers. Sydney, the Institute. 1971. pp. 141-151. STANLEY. G.G. Mechanisms in the autogenous mill and their mathematical representation. J. S.Afr. Inst. Mm. Metal!., vol. 75. no. 4. Nov. 1974. pp. 77-98. STANLEY. G.G. Considerations in the application of autogenous milling. J. S.Afr. Inst. Min. Metall., vol. 76. spec, issue. Oct. 1975. pp. 53-55. Programme No. 600 Selection of materials and optimization for extractive-rretallurgical processes I. Reports No. Title Year 1860 A preliminary investigation of materials of construction for ore hoppers 1976 1908 An analysis of the replies to a questionnaire on materials of construction for ore hoppers 1977 Programme No. 940 Miscellaneous economic, cost, and commodity studies 1. Reports No. Title Year 109 The possibility of establishing a local cost index for the estimation of metallurgical and chemical plant 1967 884 Review of information on the mineral industry of Mocambique 1970 1310 South African costs of industrial equipment for the metallurgical industry 1971 1529 South African costs of equipment for the metallurgical industry (1972) 1973 1559 A cost assessment of the production of elemental sulphur by chlorination roasting 1973 1644 Prospects for the recovery of minerals from the sea 1974 1741 South African costs of equipment for the metallurgical industry (1975) 1975 1750 A review of the present and future development of sulphur production in South Africa 1975 2. Papers GRANVILLE, A. The recovery of deep-sea minerals: problems and prospects. Min.r. Sci. Engng, vol. 7. no. 3. Jul. 1975. pp. 170-188. NIM PUBLICATIONS ROBINSON. R.E. The utilization and conservation of mineral resources. S.Afr. J. Sci., vol. 68. no. 4. Apr. 1<>72. pp. 105-110. VAN RENSBURG. W.C.J. Changing patterns in the World's supply of minerals. Miner. Sci. Engng, vol. 6, no 3. Jul. 1974. pp. 142-153. Programme No. 960 Minerals manpower, training, and recruitment 1. Report No. Title Year 1483 The South African manpower requirements in extractive metallurgy 1972 2. Paper ROBINSON. R.E. Would you encourage your son tc unuertake a mining career? Coal, Gold base Miner., vol. 19, no. 3. May 1971. pp. 19-27. Programme No. 999 Miscellaneous unallocable projects I. Reports \o. Title Year 18 The 8th Commonwealth Mining and Metallurgical Congress — Australasia — 27th February to 15th April, 1965. Visits to various places in Australia and Tasmania 1966 25 Quantitative mineralogical examination of six samples of pulverized mine ores submitted by the Chemical Engineering Group, CSIR. 1966 34 Qualitative electron-microprobe investigation of cobalt-gadolinium intermetallic compounds 1966 53 Differential thermal investigation of Moore-filler residues for the Anglo American Research Laboratory 1966 66 The study of propagation modes effective in around-the-World radio-wave propagation in the 15-Mc/s to 30-Mc/s band 1966 104 The infrared examination of microliic. muscovit'.', apatite in the presence of carbonate, asbestos, paragonite, and various uranism salts 1967 113 The identification, by means of the electron microprobe. of an opaque mineral from the Artonvilla Mine, Messina 1966 132 Mineralogical and spectrographs investigation of a mineral concentrate from Koster. western Transvaal 1967 260 The electron-microprobe investigation of two samples of magnetite catalyst from Sasol 1967 I NIM PUBLICATIONS No. Title Year 286 A mineralogical and petrographic study of the pre-Transvaal rocks in borehole K. 1. Koster district, western Transvaal 1968 287 A preliminary examination of kieselghur from Witdraai. south of Postmasburg 1968 313 The qualitative investigation of inclusions in free-cutting steel with the electron microprobe 1968 943 An electron-microprobe investigation of chiastolite crystals 1970 1697 A petrograpnic and mineralogical investigation of silica samples from the farm Elandskraal 470 JO. Rustenburg district 1975 1812 List of unrestricted NIM reports and papers published during the first decade of NIMs existence (1966 to 1975) [superseded by Report 1894] 1976 1867 NIM decennial review (1966 to 1976) 1977 1894 List of unrestricted NIM publications issued from 1966 to 1977 [superseded by Report 1970] 1977 • 1970 List of unrestricted NIM publications issued from 1966 to 1978 [superseded by Report 2013] 1978 2. Papers BATRA. K.. SEE. J.B.. and KING. T.B. Flow behaviour of liquid metals on solid substrates. Metal Sci., vol. 11. no. 5. May 1977. pp. 145-151. BROOKS. H.C.. and PAUL, R.L. Densities and excess volumes of fused halides. Z. Naturforsch. vol. 30a. 1975. pp. 64-68. CLARKE. P.J. The National Institute for Metallurgy. South Africa. Stahl und Eisen, vol. 97, no. 18.8th Sep., 1977 pp. 895-899. CLARKE. P.J. A new centre for metallurgical research — the National Institute for Metallurgy in Randburg. Afrika-Post, vol. 24, no. II. Nov. 1977. pp. 337-340. (In German.) CLARKE, P.J. Recent progress of the National Institute for Metallurgy. Metall, vol. 32. no. 3. Mar. 1978. pp. 288-289. (In German.) CZAMANSKE, G.K., and MIHÁLIK. P. Oxidation during magnetic differentiation. Jinmoskia Complex, Oslo area, Norway: Part 1. The opaque oxides. J. Petrol, vol. 13, no. 3. 1972. pp. 493-509. DE WAAL, S.A. Interference-folding of Bushveld Igneous Complex age in the Transvaal System north of Marble Hall. Transvaal. Johannesburg. Geological Society of South Africa, Spec. Pub. 1, 1970. pp. 283-298. DE WA A L, S.A. The ferromanganese deposit at Lisbon Falls, near Graskop. Transvaal, and its similarity to ferromanganese nodules of the ocean floor. Trans. Geol. Soc. S.Afr., vol. 80, pt 2. 1977. pp. 131-136. DE WAAL, S.A. The alteration and possible reasons for the refractory nature of chromitite from the Marico occurrence, western Transvaal. Trans. Geol. Soc. S.Afr., vol. 80. pt 3. 1977. pp. 235-239. i:< NIM PUBLICATIONS DE WAAL, S. A. Carbon dioxide and water from metamorphic reactions as agents for sulphide and spinel precipitation in tr&fiï magmas. Trans. Gtol. Soc. S.Afr., vol. 80, pt. 3. 1977. pp. 193-196. DE WAAL, S.A.. and CALK, L.C. The sulphides in the garnet pyroxenite xenoliths from Salt Lake Crater, Ohio. J. Petrol., vol. 16, no. 1. Feb. 1975. pp. 134-153. JOCHENS, P.R. Technology transfer between a State-sponsored research institute and industry. PROCEEDINGS OF THE SYMPOSIUM ON TECHNOLOGY TRANSFER. South African Council for Scientific and Industrial Research. Pretoria. CSIR, 1974. pp. 38-52. KNIGHT, A. Nuclear power reactors in Britain. S.Afr. Engr, vol. 57, no. 582. Nov. 1966. pp. 57-61. LASCHINGER, J.E. Focus on vital role of the National Institute for Metallurgy. S.Afr. Engr, vol. 59, no. 602. Jul. 1968. pp. 24-29. LASCHINGER, J.E. The National Institute for Metallurgy. S.Afr. Min. Engng, J., vol. 81. 24th Mar., 1969. pp. 279-287. PAUL, R.L., and BROOKS, H.C. Energies of mixing of molten silver bromide-alkali bromide system. Inorg. nucl. Chem. Leu., vol. 8, no. 7. 1972. pp. 629-631. PAUL, R.L., and BROOKS, H.C. Binary silver bromide-alkali bromide melts. Calculated and measured energies of mixing. Inorg. Chem., vol. 13, no. 3. 1974. pp. 683-690. ROBINSON, R.E. The fifth James Moir memorial lecture. S.Afr. chem. Process., Jun.-Jul. 1967. pp. CP72-CP84. ROBINSON, R.E. The case for national research in mineral processing. / S.Afr. Inst. Min. Metall, vol. 76, no. 3. Oct. 1975. pp. 196-213. ROBINSON, R.E. Metallurgical problems in the utilization of South Africa's resources. RESOURCES OF SOUTHERN AFRICA TODAY AND TOMORROW. Baker, G. (ed). Johannesburg, Associated Scientific and Technical Societies of Southern Africa, 1976. pp. 308-318. VON RAHDEN.H.V.R., and DICKS, L.W.R. Descloizite, mottramite, and vanadinite from South West Africa — an infrared and X-ray study. Am. Mineralogist, vol. 52, Jul.-Aug. 1967. pp. 1067-1076. 4. Other technical publication Notebook of experiments in extractive metallurgy for high schools. 1975. 42 pp. Programmes on Uranium Involving NIM Staff Bêfieficiatíon of ores for th0 recovery of urarPjm 2. Papers •CORRANS, I.J., and LEVIN, J. Wet high-intensity magnetic separation for the concentration of Witwatersrand gold-uranium ores and residues. /. S.Afr. Inst. Min. Metall., vol. 79.no. 8. Mar. 1979.pp. 210-228. KELEGHAN, W.T.H. WHIMS for low-grade uranium. Nucl. Active, no. 16. Jan. 1977. pp. 3-5. 12ft NIM PUBLICATIONS Fundamental studies on the leaching of uranium ores I. Reports No. Title Year 44 The zero point of charge of uranium dioxide and uraninite 1966 1031 The dissolution of UOj as an electron-transfer reaction 1970 1144 Three-dimensional predominant-area and solubility diagrams for the uranyl carbonate and uranyl sulphate system at 25 °C 1971 1205 The adsorption of uranyl species on pyrophyllite. quartz, and acid-treated South African uranium ores. A preliminary investigation 1971 1380 An electrochemical model for the leaching of uranium dioxide 1972 1448 A potentiostatic study of the anodic dissolution of uranium dioxide in aqueous solutions 1972 1550 A fundamental study of the dissolution in acid solutions of uranium minerals from South African ores 1973 2. Papers LAXEN. P.A. A kinetic study of the dissolution of uraninites in sulphuric acid. RESEARCH IN CHEMICAL AND EXTRACTION METALLURGY. Australasian Institute of Mining and Metallurgy. Sydney, the Institute, 1967. pp. 181-192. LAXEN. P.A. The dissolution of (JO, as an electron-transfer reaction. THE RECOVERY OF URANIUM. International Atomic Energy Agency. Vienna, the Agency. 1971. pp. 321-330. NEEDES, C.R.S.. NICOL. M.J.. and FINKELSTEIN, N.P. An electrochemical model for the leaching of uranium dioxide. II. Alkaline carbonate media. LEACHING AND REDUCTION IN HYDROMETALLURGY. Burkin, A.R. (ed.). London. Institution of Mining and Metallurgy. 1975. pp. 12-19. NICOL. M.J., and NEEDES, C.R.S. The anodic dissolution of uranium dioxide. I. In perchlorate solutions. Electrochim. Acta, vol. 20. no. 8. Aug. 1975. pp. 585-589. NICOL. M.J., and NEEDES. C.R.S. The anodic dissolution of uranium dioxide. II. In carbonate solutions. Electrochim. Acta, vol. 22. 1977. pp. 1381-1384. NICOL. M.J., NEEDES. C.R.S.. and FINKELSTEIN. N.P. An electrochemical model for the leaching of uranium dioxide. I. Acid media. LEACHING AND REDUCTION IN HYDROMETALLURGY. Burkin, A.R. (ed.). London. Institution of Mining and Metallurgy. 1975. pp. 1-11. SCOTT, P.D.. GLASSER. D.. and NICOL. M.J. Kinetics of dissolution of /i-uranium trioxide in acid and carbonate solutions. J. Chem. Soc, Dalton Trans., 1977. pp. 1939-1946. i:!7 NIM PUBLICATIONS Instrumentation for uranium plants 1. Reports No. Title Year 341 An experimental on-stream colorimetric uranium monitor and solvent-addition controller for the Purlex Process 1968 1530 AUREOL — an X-ray-absorption analyser for the determination of the uranium on loaded resin in ion-exchange plants 1973 2. Papers NEEDES. C.R.S., NICOL. M.J., FINKELSTEIN. N.P.. and ORMROD. G.T.W The industrial application of a uranium dioxide electrode. J. S.Afr. Inst. Min. Meiull. vol. 76, no. 4. Nov. 1975. pp. 238-246. SOMMER, G. Less hands in uranium extraction. Sucl. Active, Jul. 1973. pp. 16-19. SOMMER, G., ORMROD, G.T.W., and CHAIX, R.P. Automation of uranium processing plants. Electron. Instrumn, vol. 3, no. 10. Jan. 1973. pp. 9, 11, 13. 15, 17. 19. 21. SOMMER, G., ORMROD, G.T.W.. and CHAIX, R.P. Recent developments in the instrumentation and automation of uranium-processing plants. J. S.Afr. Inst. Min. Metall, vol. 73. no. 12. Jul. 1973. pp. 413^*20. Methods for the determination of baddeleyite, zirconium compounds, and nuclear-grade zirconium metals I. Reports So. Title Year 39 The determination of small amounts of silica in zirconium ores and concentrates 1966 49 The spectrophotomeiric determination of silica in zirconium oxide 1966 131 The spectrographic determination of titanium oxide, ferric oxide, and silica, in baddeleyite 1967 207 The analysis of baddeleyite by X-ray-fluorescence spectroscopy 1967 272 The determination of iron, titanium, and zirconium, in baddeleyite by X-ray-fluorescence spectroscopy 1968 363 The determination of thorium in solid samples of baddeleyite and carbonatite ores and in the solutions resulting from leaching these ores 1968 451 The determination of thorium in baddeleyite and carbonatite ores and in the solutions resulting from leaching of these ores 1968 1691 The determination of zirconium and aluminium by l4MeV neutron-activation analysis 1975 1723 The determination of zirconium and aluminium in zirconium-aluminium alloys 1975 • 1985 The determination of boron in high-purity aluminium metal by spark-source mass spectrometry 1978 \:H NIM PUBLICATIONS Methods for the determination of trace impurities in uranium compounds Ê. Reports No. Title Year 64 The determination of the hafnium/zirconium ratio in ammonium diuranate produced by the Bufflex Process 1966 99 Determination of molybdenum in uranium compounds 1966 129 The polarographic determination of total hexavalent uranium as urányl fluoride in uranous fluoride 1967 153 The spectrographic determination of zirconium in uranium oxide 1967 167 The determination of thiocyanate in uranium solutions 1967 174 Determination of chloride in uranium solutions 1967 256 The determination of carbon in uranium tetrafluoride 1967 354 The determination of trace amounts of arsenic in urrnium tetrafluoride 1968 417 Determination of molybdenum in uranium compounds 1968 433 The spectrophotometry determination of microgram quantities of vanadium in U.O», UO„ andUF, 1968 434 The determination of titanium in uranium compounds 1968 440 Separation of hafnium and zirconium oxides from uranium preliminary to the spectrographic determination of hafnium 1968 450 The spectrographic determination of alkali metals and alkaline earths in uranium oxide 1968 485 Gravimetric determination, using nitron, of nitrates in uranium compounds 1969 951 Colorimetric determination of minor quantities of nitrate in uranium compounds 1970 1043 The determination of ruthenium in uranyl fluoride 1970 1044 The determination of ruthenium in uranyl fluoride 1970 1089 The rapid volumetric determination of calcium in pregnant solutions in uranium plants 1970 1408 The determination of molybdenum in the solids and solutions resulting from the processing of Witwatersrand uranium ores 1972 1722 The determination of small amounts of fluoride in uranium compounds by use of an ion-selective electrode 1975 12V N1M PUBLICATIONS 2. Paper RUSSELL. B.G., WILSON. A.. LUBBE. M.V.. JONES. E.. TAYLOR. J.D.. and STEELE. T.W. The determination of selenium and tellurium in silver chloride and uranium oxide. Talania, vol. 14. no. 8. Aug. 1967. pp. 957-966. Methods fct the determination of uranium and thorium I. Reports No. Title Year 156 Preliminary observations on the automation of the TBP method for determining uranium 1967 163 The fluorimetric determination of uranium 1967 257 The determination of uranium by the TBP method 1967 455 Determination of uranium by the TBP method after extraction with ethyl acetate 1968 460 A rapid method for the determination of minor amounts of thorium in aqueous solutions of uranyl nitrate or chloride 1969 470 Rapid estimation of uranium in rafftnate solutions containing thorium by the pyridylazo-naphthol method 1969 503 Rapid estimation, by the ammonium thiocyanate method, of uranium in raffinate solutions containing thorium, lead, and copper 1969 529 The determination of uranium in the organic solvent from the Purlex Process 1969 1075 The preparation of PA DAP — 2-(2-pyridylazo)-5-dicthylaminophenol (zinc complex) 1970 1145 The use of 2-(2-pyridylazo)-5-diethylaminophenol as a speclrophotometric reagent for the determination of uranium 1971 2. Papers COOK, E.B.T., and GEREGHTY, A. The speclrophotometric determination of uranium by use of 2-(2-pyridylazo)-5-diethylaminophenol (PADAP). Bull. S.Afr. Inst. Assayers Analysts, no. 12. Jul. 1971. pp. 1-10. RUSSELL, B.G.. and DOMEL, G. The analysis of uranium by X-ray-fluorescence techniques. Bull. S.Afr. Inst. Assayers Analysts, no. 6. Jan. 1970. Mineralogies/ studies of uranium minerals I, Reports No. Title Year 237 The mineralogy of uranium in Western Areas ores 1967 1.1« N1M PUBLICATIONS No. Title Year 414 The geochemistry of some uranium minerals in the Dominion Reef and Witwatersrand Systems 1968 415 Uranium compounds in the Dominion Reefs, and their association with phosphorus compounds 1968 2. Papers BEtv >IING. J.. COOKE, R., HIEMSTRA, S.A., and HOFFMAN. U. The Rossing uranium deposit. South West Africa. Econ. Geoi, vol. 71. 1976. pp. 351-368. HIEMSTRA, S.A. The mineralogy and petrology of the uraniferous conglomerate of t!ie Dominion Reefs Mine, Klerksdorp area. Trans. Geol. Soc. S.Afr., vol. 71, no. 1. 1968. pp. 1-65. HIEMSTRA, S.A. The geochemistry of the uraniferous conglomerate of the Dominion Reefs Mine. Klerksdorp area. Trans. Geol. Soc. S.Afr., vol. 71, no. 1. 1968. pp. 67-100. Processes for the recovery of uranium 1. Reports No. Title Year 452 The Purlex Process — a description of the pilot plant leading to the use of the process in South Africa 1969 1454 A dynamic model for the extraction bank of Purlex plants 1972 1477 The control of Purlex plants 1972 2. Papers •CRAIG, W.M., HAINES. A.K., NICOL. D.I., OLËN, CM., DOUGLAS. M E.E.. and LOUW, G.D. The design and operation of a contiguous ion-exchange demonstration plant for the recovery of uranium. J. S.Afr. Inst. Min. Metall, vol. 78, no. 12. Jul. 1978. pp. 316-324. FAURE, A., and TUNLEY, T.H. Uranium recovery by liquid-liqnd extraction in South Africa. THE RECOVERY OF URANIUM. International Atomic Energy Agency. Vienna, the Agency, 1971. pp. 241-251. •HAINES, A.K. The development of continuous fluidized-bed ion exchange in South Africa, and its use in the recovery of uranium. J. S.Afr. Inst. Min. Metall., vol. 78, no. 2. Jul. 1978. pp. 303-315. HAINES, A.K.. CRAIG, W.M., FAURE, A., HENDRIKSZ, A.R.. WILLS. W.J., NICOL, D.I. The use of weak-base resins in the recovery of uranium from unclarified leach liquors. ELEVENTH INTERNATIONAL MINERAL PROCESSING CONGRESS 1975. Institute)di Arte Mineraria. Rome, Aziende Tipografiche Bardi, 1976. Paper 32, pp. 1-28. HI NIM PUBLICATIONS 7. PERIODICAL PUBLICATIONS NIM publishes the following two periodicals: (1) Minerals Science and Engineering. A review journal devoted to the origin, occurrences, winning, properties, and uses of minerals; published quarterly; annual subscription R10 (postage free, airmail postage extra). (2) NIM Research Digest. Summaries of some of the work being done and of the recently issued unrestricted reports; published every two months; available free of charge. Requests for the above should be addressed to the National Institute for Metallurgy, Private Bag X3015, Randburg, 2125 South Africa. 132 NIM PUBLICATIONS 8. MISCELLANEOUS PUBUCATIONS These publications, which are of an ephemeral nature, are not issued once they have lost their relevance. The pubKcations listed here are available at present. Those that have been included since the last issue of this list (Report 1970) are marked •. 133 NIM PUBLICATIONS A. Ammmml Report •1. National Institute for Metallurgy. Annual report 1978 (80 pp.) •2. Nasionale Instituut vir Metallurgic. Jaarverslag 1978. (80 pp.) [Afrikaans version of 1 above] B. Cmreen Brochmre 1. Prospects at the National Institute for MeUllurgy/Vooruitsigte by die Nasionale Instituut vir Metallurgie (44 pp.) 2. NIM bursaries/NIM bcursc (8 pp.) C. Gemerml Brochure 1. National Institute for Metallurgy/Nasionale Instituut vir Metallurgie (44 pp.). D. Leaflets 1. National Institute for Metallurgy (4 pp.) 2. Nasionale Instituut vir Metallurgie (4 pp.) [Afrikaans version of 1 above] 3. Control in the production of ferrochromium (2 pp.) 4. Beheer by die produksie van ferrochroom (2 pp.) [Afrikaans version of 3 above] 5. Determination of the platinum-group metals (2 pp.) 6. Bepaling van die platinum-groepmetale (2 pp.) [Afrikaans version of 5 above] 7. Flotation of mixed sulphides (2 pp.) 8. Flottasie van gemengde sulfiede (2 pp.) [Afrikaans version of 7 above] 9. NIM continuous ion exchange (2 pp.) 10. NIM deurlopende ioonuitniiling (2 pp.) [Afrikaans version of 9 above] 11. Research progress in ferro-alloys (2 pp.) 12. Vordering met ferrolegering-navorsing (2 pp.) [Afrikaans version of 11 above] 134
•2Atï00í<R REPORT NATIONAL INSTITUTE for METALLURGY
