![And'mineral Industry Open File Report]"](http://data.docslib.org/img/925cf87f031ba99090a8fcf32496df69-1.webp)
Ltf-44 m^'^if
UNITED STAtES ' , !ij t l * _L ' 1 DEPARTMENT OF THE INTfRTfORf GEOLOGICAL S0RVEXI ;j I! ;i. i ,3. |, '!g,5|- PROJECT REPORT | |3 ., Liberian'} -(IR) Investigations "~ J '' n l:'*' \''
BIBLIOGRAPHY OF THE GEOLOGY AND'MINERAL INDUSTRY OF LIBERIA AND ADJACENT COUNTRIES
Donald H. Joinso
Richard W. White U. S.\Geological Survey
U. S.l.Geological Surye OPEN FILE REPORT]" This report is preliiiiinar>| not been edited or;reviewed for conformity with Geological" Survey standards or nomenclature ,
1970 BIBLIOGRAPHY OF THE GEOLOGY; ERAL INDUSTRY t! i OF LIBERIA AND ADJACENT COUNTRIES SUPPLEMEijiij i
Donald H. Johnson .- ' -and i'l I- ;
Richard W. ,'i;> " '-^/i >* "'>'vi:"':'": 'I - ?' '*<-*,"' ; >->£ ' ^'~'f jf. !?" 1 -. '.-^ .- - .';*, ; iJ.r^.-^'.V- ," . " '. - T' ' , , Geologicai Survey '/ 'iii'l^^lS;,;^^;' BIBLIOGRAPHY OF THE GEOLOG1T ANI3 JJWjNERAL INDUSTRY OF LIBERIA AND ADJACEN? COtJ$rTRIES ' - , ' '" *' SUPPLEMENT. ' *" - I ;*;i j f^;:-^
; by j-1;: *'i i- Donald H. Johnson .and Ricftard W. White i
U. S. Geological! Survey
i / This supplement to the bibliography^- £e eased in early 1969 is a continuation and expansion of that list!. This1 s- iptplement lists papers issued after the original bibliography v as comj >iled, as well as earlier- published papers that have come to the atient that time. This bibliography was compiled ajsjfa' j>art |of the Geological Exploration and Resources Appraisal 'program^ \incjlertaken jointly by the Liberian Geological Survey and the IL S. ^Ge^ogicaJ Survey, sponsored by the Government of Liberia and the IT.' S. AJshcyI 'i f for International Development. , i ' ! i ' I : i H ' -' =f.;l ' : The references in this supplement and ira thef earlier bibliography have been compiled from many sources^ includingjthe U. S. Geological Survey Library in Washington, the Liberian G|olb jical Survey library, various published bibliographies, ref^jierfces qiteid .by; authors in pub lications dealing with Liberian geology land miiier? 1 industry/ and chance encounters in the literature. ] Thci list;! is ijdmittedly incomplete, and users of the bibliography are requested tc ; additional references or errors to the attention of the compil ?rsj.
References to mining, metallurgy, in< ;ral economies involving Liberia have been included, as have pa>ers'd lir g with physical geology, cartography^ hydrology, pedology, and relate subjects. Because the present fcnowledge of Liberian geology ilepjend ,vily on comparison with other areas, many reports on the geology of c^un ies adjacent to Liberia and the west African region are included.
i Because this bibliography has been-comp in part from other bibliographies and authors' citations, andbecal we have not seen many ^pf the references listed, some of the papers in ced here may not r : v actually be germane to Liberian geology and ml ral industry, [AH such doubtful references are included so as not to in; idiVertently omit a use ful paper. For similar reasons a numb er^ of re\ 'ejrences are included for ;- - "' -^' : '^ '^ ..:. '-: . " " ' "i ;: . "' ' ' ,' : '"f }'.;"j ;; - .'., V KV ; :-K'.rr ...- :;-''' '-:' which such information, as publisher, voliime nuipber, pagination, or date ot the publication is lacking, j ! I "rT
' ... ' - i ; ' ' j : ' " ' ^ :^'^^ :, Publications held in the library of the Liberian Geology Survey in Akr.rovia are marked by an asterisk. Many o!f the publications are availuple in larger geological libraries around tHe'world, but some, particularly unpublished company report$, inay iiot be available except by special arrangement with the compan^ Effoijts are |being made to increase the holdings of the Liberian Geological Survey;library, and persons are invited to offer publications to the library'as gifts, pr. exchange or purchase. '.'' '. \l]\ , *^ * . - ' "'r--t.tt.tt . ' ?,.
71? J'- : l^-'f^- ^®SSS-\.:- '; /H; H.; and White, R. W. ;,.,*«wv *,E )li< graphy of the geology industry of Liberia and aajaxientit ou rtries: U. S, GeoU open-file rept, (IR)-LI-32, f BIBLIOGRAPHY SUPPLEMENT
Aero Service Corporation, 1954, Aeromagijetic map; of Liberia: Aero Service Corporation, Philadelphia^ J :
Alien, P. M. , and Reedman, A. J. , 1968, JStratigt^phid classification in Pre-Cambrian rocks: Geol. Mag. , v. 1(35} no. 3, p. 290-297, -sketch 'map." '- - ' ' : '' " :.; "': v :! ^^ ' f~ I ',-; ..- ' .'. '".- -". : ' , - «,.- ' !'' '! ... ] .,-" / ''',-'"' ' ' ., . f i ; : ' Annales des Mines, 1968, Panorama de 1'iiidustij'ie jpiniere du continent africain en 1967 (with English, Russian, jGerman, Spanish, summ. ): Annales Mines, v. , no. , p. 35-56, jncjap.
Association at African Geological Surveys j- .UNECp^ 1 §68, Carte minerale :- . de I'Afrique - Mineral map of Africa; l:iot 000, 000: Paris, As soc. ; African Geol. Surveys - United Nations Edjuc. Sci. Cultural :; . ' " Organization.' : -' .- .. "- . ;..- : ; . '"" l| f," ; j i' :.- / 'r/vC;. ^.^ '"" '''./; -. i f - .; : f, ! . H .. »,- , .: - -.-. -i . '-: - '-' - . « . Baker, Ci E,, 1968, Role of science anc| technology pin,the development of Liberia: Natl.Educ. Conf., Liberia JCIpiv^, 13-16 November 1968, 14 p. ./;; v... ,',- I. =;vi}; h..:ih>v, .:.,;,,.-':-.: :'.:'-." ,;'1 .' /' ' I? !H ':^:^ V'< ' " Baker, M. W. G., 1961, Geology report pn Harpier vicinity and interior, Maryland County, Liberia: (Liberia) Bur. Nat* Resources and Surveys unpub. rept., ,16 p., map* February 11961. ' -. , . . :M > « (I,:, ' { . ,;: : ". Baker, M. W. G., 1963, Geologic report of Gbiarnga District: (Liberia) Bur. Nat. Resources and Surveypiunpufcj. !rept,, 10 p., map, 19 August 1963. . f ;n L \' '..[.
Baker, M. W. G., 1963, Geological report oh jarea west of the Farmington River: (Liberia) Bur. 'Nat. Resources and Surveys unpub. rept., 8 p., maps. .'.-. ' '[. '. ,'. | f|.-j '" .."-.f; " '. ..-.,,;' ;" ' '' ',-" * - -.
* Baker, M W. G. , 1969, Geologic summary df JMJosaie Block J-10: Liberian Geol. Survey Memo. Rept. 33, 1 p. j { ! "'*,. r ' ' i l-i !" " ' ' ' ""' * Baker, M. W. G. ,. 1969, Geologic sumjmaryjoi Mosaic Block J-9: Liberian Geol. Survey Memo. Rept. 32, |1 jp. } { ! * .-.-. , 'I; ! | .! ! Barrows, G. H. , 1967, International petroleu4n iindustry; v. 2r Central America/ South America/ Africa/ Far East/North America: New York, Internat. Petroleum Inst.' , 371 p. '., i Bassot, J. -P., 1966, Etude geologiqu^ du Senegal oriental et de ses confins guinep-maliens: Bur. Recherches GeoJ..i et Minieres, Mem. 40, 332 p., ";.'.: '.; : illus... - . ';:; ' ;.].:; ' . .. ' : - , :% ' . Behrendt, J. C. , and Wotorson, C. S.j, ,1969,1 Preliminary map of basement 4 elevation of the Liberian continental sHeif interpreted from aerd- ^ magnetic data,: XT.S. Geol. Surjvey project rept. IR- LI- 3 3, map.
Behrendt^ f\T? C;, and Wotorson, C. SJ, i969,|^reliminary gravity map | ' | ^ |^| showing Bouguer anomalies iii fh Mbnrqvia region of Liberia: TJ, S. .. Survey project rept. IR-Llf 37l ^tiap. %.,:'-,--- "'v.' :' " ; ..;-:i" ; ii'.'-l :!' \ Berge, J^ W. , 1958, Geology of the Mt.ijGlettDii region: Monrovia, LAMCO ' f Venture Operating Comp^hyl unpu a J : '''" ;--- -~' * --- ' 'V T _. . ' . . Berge, J. W.i 1963, Genetical aspec the Nimbaj iron ores: LAMCO 'Newsletter no. 3, The: Grangeberg ^mpany, Liberia Div. ,. Stockhblin, t-HV -"- - illus.i 8 " February 3:963i ' :|",j: "f"I * Berg0V * . 1068, Proposed structural E nd strajtigr^phic interpretation of tiie Nimba-Gbahm Ridge area, Li Jeria: Geol. Mining Metall. Soc. Liberia Bull., v. 3, p. 28-47,igaiusl ' ;" h' *.; Bevervoorde, E. van, 1935, Die Eisenerzvorkomiiiien in Liberia: W. H. Muller & Co. rept., Rotterdam. < ;I
Blamo, J. B., 1963, Impact of industrialization.ofi|Liberian society: Lund. Univ., unpub. master's thesis, f, : ; ; ( i N Blondel, P., 1952, Les gisements de fer dev 1'Afrique occidentale franc;aise: Internat. Geol. Cong., 19th, Algiers 1952; Symposium sur les Gisements de Fer du Monde, v. 1, ij*. 5-34. i 1 -. ' ' . ':' '!' |! ! " '! Bloot, C., 1954, Report on the Wani-Gisi mountain range: (Liberia) Treasury Dept., Bur. Mines and Geology unpiub. ;nepti, 13 p., map, May 1954, undated appendix, 2 p. f -.-.- ] [ j I
Bloot, C., 1954i Report on the Bong-Zaweah mountain range: (Liberia) Treasury Dept., Bur. Mines and Geology junpub. rept., 16 p., map. December 1954. \.\ . } j; j j
Bockh, E,, 1962, Berichte Uber die geologische Uritersuchung der Eisenerzlager- statte Bong Range: Dusseldorf, 'G^werkkdhaft Exploration Lagerstatten- archiv, 1960-62.
Bolgarsky,>Michel, 1933, Quartzites a magnetijtej due cercle de Man et de ses environs (C6te d'lvoire): Acad. s«ji /Paris? Comptes rendus, v. 197, p.-559-561. .. //; ':;,\ . : ;
Bolgarsky, Michel, 1950, Cote d'lvoire, jn Rapport annuel 1950 du Service ^ ;v Geoiogique de 1'A. O. F. i f French We%t Africa Direction Mines, Dakar, v'.' "^/i Q«\tV-- ' . :'v' ' - -. ' 'w-v '. '- .- - '^. ' '! T- ; I.- * : ..-,: - ..,...... -/;
: t j |; .i! * Bong Mining Company, 1963, AZ-maj j of ^sso^andmalies: Bong Mining Company unpub. map, 1:2,0004
I !- ? ' 1 Bonnault, D., and Sagatzky, J., 1950 ,( Not; .c & exjplicative sur la feuille Bondoukou Quest. .Carte geologiquje reconnaissance au 500.000°: French West Africa Direction, Dakar.
Bouglise, R. de la, 1936, Le gisemei it de^ei} dej Conakry: Chronique des Mines coloniales, v. , no. --9, p,.! }16-120, illus.
Bureau de Recherches Geologiques et Mimeieries,U $ f5;1960, Carte geologique de I'Afrique Occidentale au 1:2 OjOO OQO jejn sfcoupures; No. 1 Guinee - Cote 4'Ivoiire \ No. 2 C6te d'lvoire - fTogq' - pahlomey No. 3 L^gende f ?': || |! No. 4 Senegal \ I ji! 1 r No. 5 .Mali - Haute-V|olta*4Mgeif No. 6 Niger {., ; h| | No. 7 Mau'ritanie "«i j j-} jj No. 8 Mauritanie - Ntger-Nord i No. 9 Niger-Nord j \ i :; j Bur. Recherches G4ol. et MiJii^res,!^ mapsheets. * > \!'i; I Bureau de Recherches Geologiques e^Minietes, '1967, Rapport annuel 1967 (Ivory Coast section): Paris,; Bur;; Recherches Glol. et Minie*res, p. 57-58. Caine, A. i«\ , 1967, Scientific research ifi Liber^: kept, of Conf, on f/iberian Research and Scholarship Tubman (Renter of African Culture, Robertsport, Liberia, 14J-17 Junle? 10)67.
Castelain, J. , 1066, Apercju stratigraphic tye suV jla micropaleontologie et La palynologie des sediments secor tlaires je|t tertiaires des bassins de i'ouest Africain, in International thion of [Geological Sciences, 1966, Bassins sedimentaires du littoral Africaiity symposium, lre partie. Littoral Atlantique (New Delhi, 1964): Pslriis, iAssoc. African Geol. Surveys, p. 40-51 (incl. English siimm.)Ji!illus.
Chas. T. Main International, Inc., 1968; jMt. Coffee hydroelectric project without storage: Boston, Chas. TJ Main international, Inc., 107 p., ' illus' ' ' H : lii '} ' V Chautard; J., 1906, Etude sur la geographic physique et la geologic du Fouta-Djallon: Paris. ^ ; [: j r
Chetelat, E. de, 1938, Le modele lateritique dejllouest de la Guinee francaise: Rev. Geographic Phys. et Geologic Dynainiquei, v. 11, no. 1, p. 1-120, illus. !': - -I-i j j Choubert, G., and Paure-Muret, A., 1968,. Tedt0nic map of Africa, scale 1:5,000,000: Nature and Resources (tntdrnat. ;Hydrological Decade Bull.) v. 4, no. 2, p. 18-19. ' ! j I | i t-" ' Chronique des Mines et de la Recherche Miniere, J1969, Activate miniere, Cote-d'Ivoire: Chronique Mines et Redherjche Miniere, v. 37, no. 379, p. 29-31. , : i
Chudeau, R. , 1918, Keener ches sur la tpctonijqiie! de 1'Afrique occidentale: Sot. geol. France Bull.. 4, ser. l!8, pj $4h87. j , :«- - . * ' . - t ,,...-.. Clock, C. P., 1966, Liberia's low grade ironiober mine at Bong: U.S. ' ' "''' Embassy,' Monrovia,. , unpub.: .- . reptir? ,. 12jpt:-' )}: f ; : <:^p?; \ :--\^%?$${&; ' ^.xi^-v^^K^ '" '" J. B. , 1968, General description o£ LAMCO's iron ore mine in. Liberia: Geol. Mining MetaU. Sdc. Liberia' iBuIl.t-"' V. 3;lp.' 48-56,''' ^'illus. 'V ^ '''"£f$ *:'- . , . J. B. , 1968, Open pit mining in moiintai4ous terrain -LAMCO's iron II ' Mi'- ? . . - ., * Cooper, B. R. , 1!)63, Geologic report of sq^tiort^ 6f Districts One and Two 01 Grand Bassa County and District i^um&^TjjjFour of Central Province; (Liberia) Bur. Nat. Resources and SJurveyjS! unp.ub. rept., 7 + 3 p., maps. V ; i 11i .''I * Cooper, B. R. ,x 1963, Geologic report of se ctioris fclf Zprzor and Voinjama Districts, Western Province: (Libei'ia) Buri Nat. Resources and Surveys unpub. rept., 7 p., maps J.MI \ * Dames & Moore, 1967, Report - Consultation on; foundation design, pro posed Liberian refinery. Monrovia, 4 Liberia, Liberian Refining Company, Incorporated: Monrovia,' Dames & Moore unpub. rept., 13 p. , illus. ; i ' ! i ' -.;' i ; * Danielsson, Christer, and Linder, Rolf,: 1964; laboratory sintering of Nimba fines: LAMCO Newsletterjinq. l|, -THe Grangesberg Company, Liberia Div., Stockholm; p. 7-10f, illu$. L 14 August 1964. :- ' ' " I i : . Defossez, M., Mangin, J. P., Pinta, M;, jancj orthbrs, 1967, Repartition de quelques elements traces dansjles e^ujc &e Surface en zone intertropicale (C6te-d'Ivoire): Ai^^P6'^1"^31"161 Service Carte Geol. Bull., v. 20, no. 4, p. 257-276 De Launay, L., 1903, Les richesses minlrales ifleil'Afrique: Paris, Ch. i i' ; Beranger, p. i ; * DELIMCO, 1961, Concession area of DE - Liberian Mining Company: DELIMCO Gernian-Literianj^injlng Company unpub. rept., 3 p., maps,. 29 December 1961.; ; j j .] Depagne, J., 1966, Les nappes deprimees d'Afraqtie! Occident ale: Bur. Recherches Geol. et Mini^res Buil.;! IstiifeerJ, no. 2 (1966), p. D'Hoore, J. L., 1968, Classification in Moss, R. P., ed., 1968, Soil resources of tropical lA-frica: Caik bridge Univ. Press, p. 7-28. Dixey, Frank, 1921, Magnesian group of a:gn| ks Geol. Mag., v. 58, no. 689, p. 485-493. \ \\ ~\ : , If ' , Jacques, 1968, Quelques 'resultattsj sjismimief sur 1'Afrique occidentale: v. 266, no. 14, p. 1470- Acad. sci. _,,_TlParis/ H-- Comptes* rendvis;r *? t SertH.DIn 147^, sketch map. jpucellier, J., 1967, Coup d'oeil sur la geologic |fr caine en 1965 et en 1966 : .\ Chronique des Mines et Recherche Millie v..35, no. 362, p. 137-150. Edwards, W. S. , 1940, Iron ore developments in' Sierra Leone: Gen. Elec. Co. Jour., v. 11, no. 2, p. 96ft02 * Engineering and Mining Journal, 1968, Liberia: £n*|. Mining Jour., v. 169, no. 5, p. 143. j I ; i| :! * Erickson, R. I., 1952, Mining plan and lay-out fd * Liberia Mining Co. Ltd. at Bomi Hill: Monrovia, Liberia Mining Go. Ltd., unpub. rept., 21 p, 10 Fage, J. D., 1955, Introduction to the history of wesi; Africa: Cambridge, Univ. Press, \\ ' ij i ? ! ':''!» Fermor, L. L., 1915, Work of Professor Lacr6ix on tHe laterites of French Guinea: Geol. Mag., v. 11, Ao. I , pfcj: 23-37, no. , p. 77-82, no. , p. 123-129. ! \ l!y Ferrara, G., and Gravelle, M., 1966, Radiometric ages from western Ahaggar (Sahara) suggesting an eastern limit'|or-the West African craton: Earth and Planetary Sci. Letters, v.iiljl, |no. 5, p. 319-324, illus. - u'! ! J ; il. ! Frankel, S. H., 1938, Capital development in Africa; i London, Oxford Univ. Press, * Frederic R. Harris, Inc., 1967, Probing location njiap at Harper: Monrovia, Frederick R. Harris, Inc., unpub. map, ;l:24iuO,:; May 1967. * Frederic R. Harris, Inc., 1967, Probing location irjiap at Sinoe: Monrovia, Frederic R. Harris, Inc., unpub mapjjj 1:1200!| .iJtuie 1967. * Freeman, A. W., and Johnson, J. C., 1967,!i|Report i|i>ii field trip (to diamond mining areas in Liberia): (Liberia) Bur. :Nat/j Resources and Surveys unpub. rept., 8 p., 8 May 1967. ij i :| i ' i i N i Freneix, Suzanne, 1966, Faunes de bivalves et correlations des formations marines du cretace des bassins cotiers de lloueist Africain, in International Union of Geological Scieiices, 19'$6f Bassins sedimentaires du littoral africain, symposium, l re pjartie, I^ittpral Atlantique (New Delhi, 1964); Paris, Assoc. African deol.| Surveys, p. 52-78 (incl. English summ.), illus. fl' i i- i! '! ! s Furon, Raymond, 1936, t-e gisement de fer d^ Conakry;|(Guinee frangaise): Rev. g£n. Sci., y. , no. 12, p. 355. * j- :| - v-.. -- Furon, Raymond, 1968, Geologic de I1 Afriqu|> 3d. d: :j!Paris, Payot, 374 p., illus. .li 11 Garrctt. il. G. , 1066, Regional geochemical reconnaissance of eastern Sierra Leone: Univ. London, unpub. doctoral thesis, * Gauvin, Jacques, 1963, Grade control and selective open pit mining at LAMCO: LAMCO Newsletter no. 3, The Grangesberg Company, Liberia Division, Stockholm, p. 1,2-19, illus. , 8 February 1963. ! *:', ^ Centner, W. , 1966, Auf der Suche nach Kraterglasern, ;Tektiten und Meteoriten in Afrika: Naturwissenschaftern, v. 53, no. 12, p. 285-289, * Geophysics, 1967, Geotech performs 7000-mile continuous profile: Geophysics, v. 32, no. 6, p. 1113-1114, illus.L I j '. -< ' ' . ! ' * Glass, B. P. , 1968, Glassy objects (microtektjit4s.? ) from deep-sea sediments near the Ivory Coast: Science,' v.i::i ; 161, -no.M J3844, ! ; p. 891-893, illus. Goloubinow, R. , 1950, Notice explicatiyer sur la fettille Bougouni Quest. Carte geologique de reconnaissance au 500. Q00°: French West Africa Direction Mines, Dakar, . ; | j ; j ' i "* i ; Gordon, W. T. , 1945, Large diamonds f if om the Woyie River: Imp. Inst. Bull., v. 43, no. 2, p. 111-120. ,1 : ' ; ; , ' ! ' :^ -I I- ! , Grandin, G. , 1968, Aspects exogenes du gisement de manganese de Grand- Lahou (Cote d'lvoire): Chronique des Mines et Recherche Miniere, v. 36, no. 375, p. 199-206, illus. , | : ' ; | i i; ! I : -. ' ; ;; : t Grant, N. K. , 1969, Late Precambrian to early Pal ejozoic Pan- African orogeny in Ghana, Togo, Dahomeyi, and Nigerjia: Geol. Soc. America Bull., v. 80, no. 1, p. 45-55, illus. .. * . ! !, !! :i .! | , Greenfield, David, 1960> General report Submitted io the Director of the Rikets Allmanna Kartwerk, Nr. BJ Lund I Stockholm, Sweden, and the Birector of the Bureau of Natural iRe es 'and Surveys, Mr. Arthur Sherman, Monrovia, Liberia: (LJi&eria) Bur^ Nat. Resources and Surveys unpub. rept., 9 p. 1 \\ *! ';], I (': . J ',1 1 , i || Grigorlyev, V._M., 1966, Geologicheskoye stroj^nive i poleznyye S'yerra_- Leone_/Geologic framework and mineral resc urces of Sierra Leone/ hkbsj: Moskovskoye Obschest. Ispyt. Prir. i!, Byull.," " Otd.~AJ Geol.,"--11 v. 41, no. 3, p. 140. 12 Gruss, Hans, 1967, Bong Peak, Bericht uber das1 vt^rlaufige Ergebnis der gcologischen Untersuchungsarbeiten: i; Bong Mining Company, unpub. rcpt. j . ' .. '" ,'* '' Gruss, Hands, and Bockh, E., 1960, Vermork uber;die|;geologische Erkundung der Wologisi Range zw. KL. Gblaghaijzi und Lofa! River, Liberia: Monrovia, Bong Mining Company unprub. rejjtj., 7 p., illus., 4 March 1960 (with English translation by G. W. Leo)| ;i * i Giirich, G., 1887, Beitrage zur Geologie von Westafrika: Deutsche geol. Gesell. Zeitschr., v. 39, no. , p. ,96-1361 j j 13 Hahn, A. , and Plaurnann, S. , 1962, Berichte uber ie erdmagnetischen und gravimetrischen Untersuchungen de;r Ejisen^fzlagerstatte Bong Range: Dusseldorf, Gewerkschaft Exploration Lagfejrrstattenarchiv 1960-62. !' ; $ "' Hamilton, E. I. , 1965, Applied geochronolfcgyc London and New York, Academic Press, 267 1. , illus. ! : Hark, H. U., and Porth, Hans, 1968, Neue-Erdoluiid Erdgasexplorationsgebiete in der Welt; II, Neue Explorationsgebiete (AJfrika, Mittlerer Osten, Westeuropa, Amerika); stratigraphische Fallen; Schwerolsand- und Olschiefervorkommen: Erdol Kohle;! vl 21, ina. 4, p. 193-198 (incl. English summ.), sketch maps. ^ | ;j ; ; ; i:' j ' ! "' Harrison Church, R. J., 1957, West Africa: ^ondon, i Longmans, Green and Co., -ji ' ']j;i : 11 , .j!i; ' Hinte, J. E. van, ed., 1966, Proceedings iojf t the Sejcond West African Micro- paleontological Colloquiuin, Ibadan,! .jjune to July 1st: Leiden. E. J. Brill, 294 p. , illus. '] ': * Holland Syndicate, 1935, General report brjqught out by the Holland Syndicate over their activities from the 21st di Septem-bSer 1933 -- the 1st of March 1935: Monrovia, Holland Syndicate unpub. rept., 32 p. ;i : N; Holman, R. H. C., 1956, Applied geochemical| studii6s; in Uganda and Sierra Leone: Univ. London, unpub. doctoral thesis: , I ! $ \ ' Hubert, H., 1919, Carte geologique de I'Afnque odcidentale: Paris, j ! 'H 'i ' ' Hubert, H., 1920, La geologic de 1'Afrique pccidentale: : ii 1 . Hurley, P.*M., and Rand, J. R., 1968, Review pf age data in west Africa and South America relative to a test !0f continental drift; in Phinney, R. A., ed., 1968, History of the earth's irfystj! a symposium: Godtiard Inst. Space Studies, Conf. 3J966, jc^ntjr., p. 153-160, illus. j M in, ir 14 Jl I Immink, Theo, and Reilingh, Albert, .l|)5i:,. RQJ>O qt of the investigation of the minerals in the Golella area: Uiberia Mirting Company unpnb. rept., 10 p. , 22 January 1951. 1 :; \ \\ International Atomic Energy Agency, 19&3, Preliminary observations of I. A. E.A. mission to Liberia: Internal/ Atomic Energy Agency unpub. rept. , 8 p. International Geological Congress, Coniinissioj: tor Geological Map of World, Subcommission for Tectonic Map .of Worl Intsiful, J. D. , 1953, Report on the Wariigibi R^nge bauxite deposits: Liberia Treasury Dept. , Bur. Mines and, Geology unpub. rept. , 14 p. , illus, appendix. ,'i | ~ ,| ' M L nd Tappita Districts, Central Province: Liberia Treasury Dept. , 1 Bur Ji| Mines and Geology unpub. rept. , 3 p. , 30 November 1954. ' i : 15 Hi Jack, D T. . 1060, LIconomic survey of Sierra Lipoiije: Freetown, Govt. Printing Dept. , -, , (I \\ 1 : II Jacobs, Wolfgang, and Feik, Joachim, 1963,: Verglfcichende Mahlversuche mit einem Quarzbander-Eisenerz Jin,einer:!Stjabmuhle und einer Kaskadenmiihle: Aufbereitungs-Tejchnik, v. A, ! : i| I ' * Janelid, Ingvar, 1953, Report of Ingvar Janelid (£utu deposits): Royal Inst. Technology, Stockholm, Div. Mining and S irveying unpub. rept., 6 p., illus., appendices. Jansen, H. , 1964, Mineralogische Berichte uber cije Untersuchung von Erztypen und Aufbereitungsprodukten der Eijsenerzlagerstatte Bong Range: Diisseldorf, Gewerkschaft ExpQ.ora1£]oni Laberstattenarchiv 1961-64. . ' ' ; ; ' 'ii i vi !i ''''*' ;! :\ * Johnson, D. H., Holmes, A. J. , and Coopier,; B. 1jl.,; 1968, Geochemical investigations of base metal occurrences inijwestern Liberia (abs.): Geol. Mining Metall. Soc. Liberia. Bull., vji 3> p. 78-79. 1 .j * Johnson, D. H. , and White, R. W., 1969,. 'Bibliography of the geology and mineral industry of Liberia and adjacent countries: U.S. Geol. Survey project rept. IR-LI-32, 65 p. ; Liberian Geol. Survey Memo. Rept. 40, 65 p. .-.'; i« !|Si ' * Jones, A. E. N., 1963, Report on geological reconnaissance in Gbarnga District: (Liberia) Bur. Nat. Resources and; Surveys unpub. rept., 12 p., August 1963. -ii i * Jones, A. E. N., 1963, Report on geological ireconhjaissance in Voinjama District: (Liberia) Bur. Nat. Resources andljSurveys unpub. rept., 10 p\ , August 1963. * Jones, A. E. N., 1967, Republic of Liberi'a: (Liberia) Bur. Nat. Resources and> Surveys, unpub. rept. prepared for the,Govt. of Ivory Coast Republic, 8 p. , 4 April 1967. ;j .i :; l' : i : * Jones, A. E. N., 1968, Liberia, in Littlefield, LJD., 1968, Developments in central and southern Africa in 1967: Am. Assoc. Petroleum Geolo gists Bull., v. 52, no. 8, p. 1530-1532. i ~~ i' ! ' * Jones, A. E. N. , 1968, Summary of mining development in Liberia for 1967: (Liberia) Bur. Nat. Resources and Surveys:unpub. rept., 5 p. (Con densed version published in World Mining, y. ;2l, no. 7, p. 138, 17 June 196a) ' i : i 16 * Jones, A. E. N. , 1968, Report on discusisions between the Liberian Economic Delegation and the Organization ol] Petroleum! Exporting Companies, Vienna, Austria, August 19-24, 1068;: (t^bejria) Bur. Nat. Resources and Surveys unpub. rept., 4 p. , iappendik * Jones, A. E. N., 1969, History of mining iri Lit jria: Liberian Hist. Rev., v. 5, p. 53-59. 'I ! ' i I i . i _ i y * Jones. A. E. N. . 1969, Mining developments injLiberia - 1968: (Liberia) Bur. Nat. Resources and Surveys iuapub. Ijirept. , 3 p. (Condensed version to be published in World Mining, ||r. -22, no. 7, p. June 1969). ; ', ' S!! ii ' ' 1 * Jones, A. E. N. , 1969, Liberia in Worldj-wide xftirj:ing summary: World Mining, v. 22, no. 7, p. 194. * Jones, A. E. N., and Wotorson, C. S., 1968, Gfeojcigic summary of mosaic blocks G-5, G-6, H-5, and H-6: ^.iberiais Geol. Survey Memo. Rept. 24, 3 p. | ; ; .; * Jones, R. D. , 1964, Iron ore reserves of Exploitation Lots m and IV, Bomboma- Bambuta area: Liberia Mining Company, L|td. unpub. rept., 7 p. , map. Julian, E. , 1938, Les mines en Guinee franchise: |Nord-Sud, Casablanca, no. 33, 3 p. , illus. i 'I' Junner, N. R. , 1930, Notes on the geology and miaiieral resources of Sierra Leone: Sierra Leone Studies no. 1J6, Freetown, ! j lI !i!'! iI Junner, N. R. , 1930, Sierra Leone; annual report of the Geological Survey, 192,9: Freetown Govt. Printer, 12 p. | Junner, N. R. , and Harwood, H. F. , 1930, Norit^ of Sierra Leone, British We^st Africa: Internat. Geol. Cong. , 1 5th; jjpretoria 1929, Comptes rendus, v. 2, 1. 417-433. .! ' ' ' 17 Kett, F. i.7 . , 1950, Report on investigation olf mineral occurrences on property belonging to Firestone Plantations Coj. , Hair^e!,- Liberia, West Africa: Harbel, Firestone Plantations Co. unbub.; rept. ', 17 p., appendices, maps. Kimpe, C. de, and Tardy, Yves, 1967, Etude de- 11 alterationx d'une biotite en kaolinite par spectroscopie infra -i'pug$:j jCentre Nat. Recherche Sci. , Groupe Francais Argiles, Bull, v.j t&, np. 2, p. 81-85 (incl. English summ. ), illus. (1968). Knox, Alexander, 1905, Notes on the geologjr of the! continent of Africa, with an introduction and bibliography: Lojidon; ; 'i ,1 165 p. i : ' '' i * Kooyman, J. , 1954, Report on the geology ojf the .Saniquellie District, Central Province, Liberian hinterland: Liberia Treasury Dept., Bur. Mines and Geology, unpub. rept.., 17 p. , illus. j; ' j Kooyman, J. . 1954, Report on the Zigida-Konya ari^ja of the Wani-Gisi Mountain Range, Zorzor District, Western Province: IjLiberia Treasury Dept., Bur. Mines and Geology unpub. rept.h, 12.p.!|| map. 18 * LAMCO, 1958, Map of Buchanan area, 1:10, 000;: ,j! Monrovia, LAMCO Joint Venture Operating Company unpub4 map.j ;|| . iii ' ! I ,; . ' * LAMCO, 1960, LAMCO selection of exploration;lbt& 1958-1959: Monrovia, LAMCO Joint Venture Operating Cbmpany^junpub. repts., letters, maps. . i * LAMCO, 1961, Maps of Nimba area: Monrovia,; LAMCO Joint Venture Operating Company unpub. maps,. l:5000lgjndj 1:20,000. , 'I i . * LAMCO, 1963, Nimba mining project, map and cjhraWings: Monrovia, LAMCO Joint Venture Operating Company unptib. psjepi. * LAMCO, 1964, Nimba railroad profiles: MomroVjfa, LAMCO Joint Venture Operating Company unpub: profiles, ,27'p. La Rue, A. E. de, 1927, Contribution a I'jetucle nt jin^ralogique de la Cote d 1 d'lvoire: Com. Etudes Hist, et Sci. A. O.\F. jjBull., Paris, Larose, p. 191-215. La Rue, A. E_. de,_1927, Sur quelques mineraux de J.& C5te d'lvoire: Acad. Sci. /Paris/ Comptes rendus, v. 184, p. jj.OJij-106. ' >H \ ^ La Rue, A. E. de, 1928, Observations sur les gisements de manganese de la C6te d'lvoire: Soc. franqaise mineralog Lei et crystallographie Bull., v. 51, no. , p. 275-284. j La Rue, A. E. de, 1930, Observations geolbgiques a travers la C3te d'lvoire: Rev. Geographic Phys. et Geologie Dynamijque, v. 3, p. 72. Tj Lavrov, V. M. , and Syrskiy, V. N., 1967, Extensions of the west African structural elements into the oceanic floor: 'Acad. Sci. USSR, Doklady, Earth Sci. Sec., v. 177, p. 92-94, sketch map (1968). I ' i $ ' LeBourdiec*, P., 1958, Aspects de la morpho^enesi^ plio-quaternaire en Basse Cote d'lvoire (A. O. F. ): Rev. Geomorphologie Dynamique, v. 9, no. , p. 33-42. i f Leneuf, Noel, and Berthelot, Dosithee, 19£6, Donne;esnouvelles sur le contact socle-continental terminal en Cote d'lvoire:!! Soc. geol. France Comptes rendus, no. 8, p. 283-285, illus. . i i';|1 Leneuf, Noel, and Tastet, J. P. , 1968, Presence dl'Jialloysite dans la region d'Aboisso (C6te d'lvoire): Acad. sci. /Pari£/ Comptes rendus, Ser. D, v. 266, no. 14, p. 1467-1469, illus. ; 19 Leneui, Noel, and Tempier, Paul, 1968, Etude deila fracturation de deux granites au nord d'Abidjan (Cote d'lvoire): :Soc. geol. France, Compte renuu, v. , no. 3, p. 99-100, illus. , ; ' i ' i Leneuf, Noel, and Yace, Ignace, 1966, Le granite(birrimien circonscrit d'Amkro (CCte d'lvoire): Soc. geol. France Comptes rendus, no. 8, p. 282-283, sketch map. i M ; Lenk, P. , 1967, Research of fresh water in a salijie environment, in Water for peace, v. 2, Water supply technology: jlnternat. Conf. Water for Peace, Washington 1967, p. 869-875 (incl. i French, Spanish summ.), illus. , (1968). i .! Leonardos, O. H. , 1968, Tentativa de correla9ao.de/w i ' algumas formac.oesfj pre-S devonianas de Africa e do Brasil: Minera^aQ, Metalurgia, v. 48, no. 285, p. 109-112. . , : Lepersonne, J. , 1960, Quelques problemes de 1,'histoire geologique de 1'Afrique au sud du Sahara depuis li fin du Carbonifere: Soc. geol. Belgium Annals, v. 74, no. , p. 21-85.. , ' * Lepp, Henry, and Goldich, S. S. , 1964, Origin of'Precambrian iron formations: Econ. Geology, v. 59, no. 6, p. lQ25,-106Ci, illus, '. i i Lersch, Johannes, 19 , Geologische Karte desi Westlichen Nordlagers: Bong Mining Company, unpub. map. > < j Lersch, Johannes, 1964, Geologische Berichte: uberjdie.! I j Untersuchung der Eisenerzlagerstatte Bong Range: Dtussel^oirf^ Ge\^erkschaft Exploration Lagerstattenarchiv 1962-64. ! I '» I <:1 Leuria, Basil, 1962, Quarterly report, Septembeijtj-Noveihber 1962: Monrovia, St. Andrews Securities Limited unpjubj r^pi. j 2 p. * Leuria, Basil, 1963, Quarterly report, De^emberjl,; 1;962-February 1963: Monrovia, St. Andrews Securities Limited|jjunpub. rept., 3 p., maps. i ;jj i ; ;jl * Leuria, Basil, 1963, Quarterly report, March-May 19i63: Monrovia, St. . Andrews Securities Limited unpub. jrept.,: 3 p. ', maps, appendix. f * Leuria, Basil, 1964, Final report, Western province j(Lofa County) area: Monrovia, Diamond Mining Corporation 01 Lil^ria unpub. rept. , - 8 p. , maps, appendices. j. ; ! j if 20 Leuria, Basil, 1964, Lofa County, quarterly report^ September 1st - November 30th 1964: Monrovia, Diamond Mining Corporation of Liberia Limited unpub. rept. , 3 p. , imaps. 11Jj.l Leuria. Basil, 1965, Quarterly report, December Ijst, ' 1964 - February 28th, 1965: Monrovia, Diamond Mining C6j*pogratidnj of Liberia Limited unpub. rept., 7 p. , appendix, maps.;. j Leuria, Basil, 1965, Quarterly report, 1st'March, 1965- 31st May, 1965: Monrovia, Diamond Mining Corporation of Liberia Limited unpub. rept., 5 p., maps. : ' ^1 'I j Leuria, Basil, 1965, Summary of operations^ September, 1964 - July, 1965: Monrovia, Diamond Mining Corporation of Libejrjia Limited unpub. rept., 3 p., appendices, maps. j |; i i il i 1! i i - - Leuria, Basil, 1965, Quarterly report, 1st Jjune; 1965 j- |31st August, 1965: Monrovia, Diamond Mining Corporation pf Lif>e;ria Limited unpub. rept. , 6 p. , maps. . ''j! S* -}-1 ii =! Leuria, Basil, 1965, Quarterly report, 1st S;ept£mber;!i- 30th November, 1965: Monrovia, Diamond Mining Coloration df Liberia Limited unpub. rept. , 3 p. , maps. *\ 1 '.i '; \ ! I 'ii Leuria, Basil, 1966, Quarterly report, December! 1st, ; J.965 - February 28th, 1966: Monrovia, Diamond Mining Corporatioiji oft Liberia Limited unpub. rept., 9 p., appendices, maps. ;'j- !J ji Leuria, Basil, 1966, Quarterly report, 1st J larch-)' 3 1st May, 1966: Monrovia, Diamond Mining Corporation of Liber a Limitede |inpub.in rept. , 6 p. , ' appendices, maps. ' "!:" j . { ! i Leuria, Basil, 1966, Quarterly report, 1st J One,* L966 rf 31st August, 1966: ' Monrovia, ^Diamond Mining Corporati sn Limited unpub. rept., 5 p. , appendix, maps. * Leuria, Basil, 1966, Final report - 1966: Monrovia, Diamond Mining Corpor- A ation of Liberia Limited unpub. rept. , 6 plJ, jioaaps. s f r !! jj I " _;.' * Leuria, Basil, and Stracke, K. J., 1964, Quarterly; jrepbrt, 1st December ' 1963 - 29th February 1964: Monrovi£ , St.['Andrews Securities Limited unpub. rept., 4 p;, maps. Leuria, Basil, and Stracke, K. J., 1964, Quarterly 1:report, March 1st - May 31st 1964: Monrovia, Diamond Mining Corporation of Liberia Limited unpub. rept., 5 p., appendices, ma^s. ;! 1 21 * Leuria, i-Jasil, and Strackc, K. J. , 1964, Quarterly report, June 1st - August -Usi. ii;64: Monrovia, Diamond Mining Corporation of i.itKTia Limned unpub. rcpt. , 7 p. , appendices, maps. i Liberia Department of Agriculture and Commerce, : , Foreign trade reports: Liberia Dept. Agriculture and Commerce, Liberia Department of Agriculture and Commerce^ 1959, Balance of payments: Liberia Dept. Agriculture and Commerce, |Div. of Commerce, Bur. Statistics, Repi. no. 5, p. 23. , : * Liberia Division of Civil Aviation, 1966, Aeronautical information publication: Liberia Dept. Commerce and Industry, Div. of Civil Aviation, charts, tables. i ! i * Liberia Mining Company, 1949, Plan and logs of bore holes in harbor area at Free Port, Monrovia: Monrovia, Liberia Mining Company, Ltd. unpub. rept. , 28 p. , illus. : * Liberia Mining Company, 1962, Maps showing exploration lots at Bomi and Bopolu: Monrovia, Liberia Mining 1 Company, Ltd. unpub. maps, 1:2000 and 1:125,000. : * Limpex, 1956, Liberia iron-ore expedition, WeboiHill, February-April 1956: Monrovia, Liberia Import-Export Palmqil Company, Ltd. unpub. rept., 7 p. , annexes, illus. , , i i i i * Lindblom, C. E. , 1968, Bibliography on west Ajfrxcan small-farm agricultural development: Monrovia, U. S. Agency fbrj Iriternat. Devel. unpub. rept. , 3 p. '',!' ; ' r : » ,' ' * Linder, Rolf, and Ohrner, K. G. , 1965, Technical effects of burden enrichment with Nimba ore on iron-making: LfVMCQ Newsletter no. 4, The Granges- berg Company, Liberia Div. , Stockholm,! p. tl-19, illus. , | ] ' i * Lindgren, P. O. , translator, 1964, Industrial sintering tests with Nimba iron ore fines at Oxelosund Steel Works: LAMCO Newsletter no. 2, The Grangesberg Company, Liberia Div. , Stockholm, 16 p. , illus, 10 November 1964. ' ; * Lindgren, P. O. , translator, 1965, Sintering plant experiments with Nimba ore at Oxeiosund Steel Works, November-December 1964: LAMCO . Newsletter no. 4, The Grangesberg Company] Liberia Div. , Stockholm, p. 20-26, illus. ' j ' . !. 22 . j i 'I ! i i/ ; [.inner, S. , i!*.")!), Prospecting i'or .^old at the 'Fantro Range, Bassa Hills: Monrovia, LAMCO Liberia American-Swedish Minerals Co. unpub. rept. , 1 p. , map. Lippolt, II. J. , and Wasserburg, G. J. , 1066, Rubidium-Strontium-Messungen an Glasern vom Bosumtwi-Krater und £n Elfenbeinkusten Tektiten: Zcitschr. Naturforschung, v. 21a, no. i 3, p|-i 226-231 (incl. English abs. ), illus. ! i ! Liitleiielc, L. D. , 1968, Developments in central and'southern Africa in 1967: Am. Assoc. Petroleum Geologists Bull., v. 52, no. 8, p. 15 - 15 . ' ' i i1 i - '' ': ' I I I ! I,' i' ij * Lyon Associates, Inc., Dewberry, Nealon | and Davisj Joint Venture, 1968, Soils report for improvements to Roberts International Airport: Liberia Dept. Public Works and Utilities, 36i;pi , illus. Aiucheu>, :u)orhaimtl. l:Ki«S. Das Prakambrium von> Afrika, in Lotze, F. , c<\. , iiioU, Frakambrium; zweiter tcil, Sudliche Halbkugel: Handbuch .u'i- siratigraphischen Geologic, v. 13, pt.' 2, Stuttgart, Ferdinand iJnke Verlag, 702 p. , ' . Malm, 1961, The LAMCO Project: Malm,; Quart:, Mag. Grangesberg Company, v. , no. 1, p. i . i i ' * Maim, 1963, Nimba - an outline of the new mine1 in Liberia: Malm, Quart. Mag. Grangesberg Company, v. , no. ., p. - , illus. Marmo, Vladi, 1956, On the porphyroblasiic 'granite 6f central Sierra Leone: Acta Geographica (Helsinki), v. 1.5] no. 7,i pj jl-26. .'' |'i< !j- * Massaquoi, A. M. , 1952, Precursory report :of geolpgic investigations in the Eastern Province (Mt. Tarjoe, Kpason's Tbwn, Juarzon District): - Liberia Treasury Dept. , Bur. Mines'and deollogy unpub. rept. , 2 p. . ' i ' ' * Massaquoi, A. M. , 1952, Report of the Liberian delegation to the XlXth International Geological Congress held; in Algijers: Liberia Treasury Dept. , Bur. Mines and Geology unpub.; rept. , j 9 p. , appendix, illus. * Massaquoi, A. M. , 1953, Rock estimates and preliminary survey of the Since Port Project, prepared and compiled ,for the African Fruit Company: Liberia Treasury Dept. , Bur. Mines and Geology unpub. rept. , 3 p. , appendix, illus. I > j * Massaquoi, A. M. , 19 , Iron ore exploration and exploitation on a large scale: (Liberia) Bur. Nat, Resources and Surveys unpub. rept. prepared for United Nations Iron and Steel Symposium,! 15 p. , illus. i j * Massaquoi, A. M. , and Richards, J. G. , 1952, Preliminary report on the geological survey of the Putu Range, Mt. Jeideh: Liberia Treasury Dept. , Bur. Mines and Geology unpub. reptj ,j 4 p. .li * Massaquoi, G. K. , Richards, J. G. , and Holmes, £. J., 1955, Samples from Grand Bassa County, Districts 1, 2, anjd 3: Liberia Treasury Dept. , Bur. Mines and Geology unpub rept. , J5 p. Mauny, Raymond, 1952, Essai sur 1'histoire des me'taux en Afrique occidentale: Inst. Fran9ais Afrique Noire Bull. , ,v. 14, no. 2, p. 545-595, illus. / ! ' i, Mauny, Raymond, 1961, Tableau geographique1 de 1'puest Africain au moyen age, d'apres les sources ecrites, la tradition et 1'archeologie: Inst. Franc^ais d 1 Afrique Noire Mem. 61, . 24 Aiot'alium. \V. 1.. , l!'tH, On becoming a rock hound: Liberian Naturalist, \,a. History Assor. Liberia .Jour. , v. 2, no. 1, p. 12-13; no. 2, p. 29. Miehel, Pierre, 1!>6(5, Morphogencse ct peuogencse; exemples d'Afrique oc'culentale: African Soils - Sols Africainc, v. 13, no. 2, p. 171-195 (mcl. English summ. ), illus. Miehel, Pierre, Tricart, Jean, and Vogt, J. , 1956, Les oscillations clirnatiques c;uaternaires en Afrique Occidentalet Cong. of INQUA, Madrid- Barcelona, Mine Management Associates, Ltd., 1962, Mano'River Project: Monrovia, Mine Management Associates, Ltd. , and African1 Construction Company Ltd. unpub. rept. , 4 p. , appendices.,, illus. ; Mineral Trade Notes, 1968, Iron ore, Liberia: U.! S. Bur. Mines, Mineral Trade Notes, v. 65, no. 6, p. 8-9, ' ; j Mining Engineering, 1968, Bethlehem-LAMCO peill'et plant starts up in Liberia: Mining Eng. , v. 20, no. 5, p. 12., ; Molly, E. W. , 1947, L'horizon manganesifere de la moyenne Cote d'lvoire: Soc. geol. France Bull., ser. 5, v. 16, no. 4-6, p. 213-216. Moss, R. P. , ed. , 1968, Soil resources of tropical Africa; Symposium of the African Studies Association of the United Kingdom: Cambridge Univ. Press, 226 p. , illus. Moss, R. P., 1968, Soils, slopes and surfaces in.tropical Africa, in Moss, R. P. , ed. , Soil resources of tropical Africa: Cambridge Univ. Press, p. 29-60, illus. , . ; * , Muller, E. , 1967, Nordlager, Bericht iiber das vorlaufige Ergebnis der geol. Untersuchungsarbeiten: Bong Mining Company, unpub. rept. Murard, R. , 1949, Les mines, _in Afrique Occidentale Franchise:- Paris, Encyclopedia Colonial et Mar. , v. 2', p^ 143-160. 25 .\uiionul Iron Ore Company, 1963, Map and pro files! of tailings pond: Uunrovia, National Iron Ore Company, :Ltd. junpub. map, 1:2400. i ; National Iron Ore Company, 1!)66, Mano lUver report: Monrovia, National Iron Ore Company, Ltd. unpub. rept; road 1: efore Geol. Mining Metall. Soe. Liberia, 17 December 1966, : 10-p. ,| jillus. I I/ * National Planning Agency and Bureau of Natural ille! ources and Surveys, 1966, Request for United Nations Development i?roigramme assistance to the i ' Mi i Republic of Liberia for economic £ Valuation jdf an integrated steel plant in Liberia: (Liberia) Natl. Plan.; JAgencyjp-nii Bur. Nat. Resources and Surveys unpub. rept. , 19 p. |ij |j * Nelson, R. A., 1952, Airborne radioactivity' surye^r!in Liberia, West Africa: U. S. Geol. Survey open-file re.pt. ,, 10 p.l| ; I i Neltner, L. , JL934, Les ressources minetfales dei'la France d'Outre Mer: Bur. Etudes Geol. et Minieres Publ. , Neumark, S. D. , 1964, Foreign trade and econoihic development in Africa: Stanford, California, Stanford Univ.1 , Rood Research Inst. , 222 p. Newhouse, W. H. , Thayer, T. P., and Butler, A|., Jr., 1945, Prel?jnin- ary report on iron ore reserves atiBomi Hiljls;, Liberia: U. S. Geol. Survey open-file rept. , 22 p. '. "ii| | Niedermueller, Walter, 1968, Iron ore mining in the Iron Quadrangle of Brazil: Geol. Mining Metall. Soc. (Liberia^Bull., v. 3, p. 1-15, illus. ' 26 Oft'erbor"., J. > >. , 1M5.), Geology of the Putu ftanije,; eastern Liberia: \ionro-.iu, LAMCO Joint Venture Operating Company unpub. rept., | i < K'lVriuu'j.;, .i. O. , l!»r),r), Core records from the l^utu exploration work: Monrovia, LAMCO Joint Venture Operating Pompany unpub. rept., 15 p. Offerberg, J. C). , 1056, Geology of the Piitu Hangej eastern Liberia: Monrovia, LAMCO Joint Venture Operating Company unpub. rept., Ot'i'orberg, J. O. , 1!)58, Geology and ironiores of tne southern Goe Range and the Fantro Range, Grand Bassa Countyj, Liberia: Monrovia, LAMCO Joint Venture Operating Company;iinpub. rept., i - i ' 'i ! Ostojic, F. D. , 1968, Mine sampling practice at M[ario: Geol. Mining Metall. Soc. Liberia Bull. , v. 3, p. 66-69. ; .jj : Ostojic, F. D., 1968, Iron ores for blast furnacesd Geol. Mining Metall. Soc. Liberia Bull. , v. 3, p. 70-75^ j l^apon, Anuro, lloques, Maurice, and Vachottc, Michcllc, 1068, Age de 2700 r.ui ;ions u'aances, determine par la methode au strontium, pour la si'ric charnockitique de Man, en Cote-d'Ivoire: Acad. sci. /Paris/ Comptes rendus, ser. D, v. 266, no. .20, p. 2046-2048, illus. * 1'urk, C. 1A , Jr. , l'J50, Origin of hard hematite in itabirite: Econ. Geology, v. 54, no. , p. 573-587, illus. ' 1 Parkinson, John, 1913, Geological structure of "West Africa: African Assoc. Jour., v. , no. , p. . ! j i i i | rr * Patrick, J. L. , 1956, Outside exploration report: no.i 3, Wologisi Range, Western Province: Monrovia, Liberia Mining Company unpub. rept., 3 p. 'I !M * Patrick, J. L., 1956, Outside exploration report rip. 5, geology of the Bella Yella area: Monrovia, Liberia Mining Company unpub. rept., 2 p., map. Pelzer, H. , and Habenicht, R. , 1964, Bulk handling -fabilities for a West African iron ore mine: Krupp Tecti. Rev. v1 v. , no. 1, p. Peperzak, Paul, 1952, Reconnaissance soil survey of the Firestone Plantations, Harbel group, Liberia: Harbel, Firestone Plantations Company unpub. rept. no. 33, 67 p. ; ., * Percival, F. G. , 1952, Les ressources mondiales1 en mineral de fer: Internat. Geol. Cong., 19th, Algiers 1952, Symposium sur les Gisements de Fer du Monde, v. 1, p. xvii-xxxi. , , i ';! : * Percival, F. G., 1961, R eport on certain aspects' iof the Mano River iron deposits, Liberia: Monrovia, Liberia Miniijigi I (pompany^1 unpub. rept., 40 p. , illus. : I i/ * Phillips, J. T., Jr. , 1954, Report on the first Of a sdries of experiments to determine fertiliser requirements of vegetablei crops grown on Liberian soils:* Liberia Dept. Agriculture and Comnlerbe, Central Agr. Expt. Sta. , Suakoko, Sta. Note 3, 6 p. , illus. !! "*" ':; Phinney, R. A. , ed., 1968, History of the earth's (irust; a symposium: Goddard Inst. Space Studies, Conf. 1966, Cpni|r., p., illus. i i Plotzki, E., 1957, Liberia-Berichte: Dusseldorf, Gdwerkschaft Exploration Lagerstattenarchiv ' ; 28 Pollett, J. D. , and Broughton, H. J. , 1950; Lignite deposits of Sierra Leone: Colonial Geology and Mineral Resources, v. 1, no. 1, p. 37-50. Pousette, Ingemar, 1066, LAMCO's project] outlook in 1.1966: Monrovia, LAMCO Joint Venture Operating Company unj^ub., i^ept. ,, 13 p. , illus. i i Pousette, Ingemar, and Swartling, A. , 196$, Operational experience on the LAMCO Project: Mining.and Minerals Epgj., v. , no. , p. i ', ': Preuss, E. , and Freyhold, M. O. von, 196,3, Dej: ,er erste Tektitfund in Liberia: Naturwissenschaften, v. 5ij>, nqj 4, pj 177-178. 29 * Richardson, II. E. , 1957, Report on hydrographic survey of the Lofa River, Liberia: Monrovia, Stanley Engineering Company of Africa unpub. rept. , 5 p. , map. Richardson, N. R. , 1959, Liberia's past and present: London, , ; i * Rohan, T. M. , 1968, New vitality of iron o-fe: 1 Irori Age, v. , no. , p. 61-68; illus, 24 October 1968. .' i * Rosenblum, Sam , 1968, Chemical and spectrographic analyses of kyanite from Mt. Montro, Grand Bassa Couhty, Liberiia: U. S. Geol. Survey open-file rept. , 4 p. ,; Libetrian Geol. i Survey Memo. Rept. 35, * p. V ! ! ! ! i , :! '. ' * Rosenblum, Samuel, and Srivastava, S. P. | 196$, .;Methods of heavy-mineral study in Liberia (abs. ): Geol. Mining Me^all. ;Soc. Liberia Bull., v. s, p. so. J, : :;i i ; 30 llaisin, C. A., 1393, Contribution to the geology of Africa; 11. Specimens ii-om West Africa (Sierra Leone); Geol.i Miag. , v. 10, no. , p. 440-442. I * Relueldt, W. R. , 1 (J67, Geological investigations In the Bie Mountains area, Grand Cape Mount County, Republic of Liberia: Monrovia, Liberia Mining Company unpub. rept. , 14 p., mapi ; Rcnaud, L. , and Delaire, L. , 1955, Notice1 explicative1 i sur la feuille Conakry- Est: French West Africa Direction Mines,; Dakar, , 16 p. . i : Ricahrd-Molard, J. , 1949, Afrique occidentale lirja^aise: Paris, Editions Berger-Levrault, :, . . \\\I : * Richards, J. G. , 1952, Report on geologic mission in Western Province, Suehn-Bopolu District, Tawalata area: Liberia Treasury Dept., Bur. Mines and Geology unpub. rept.;, 3 pi., illus. ! ': '; * Richards, J. G. , 1952, Report on rock type and estimate quantity of rock available on the cape at Harper City, Cap$ Palmas, for the proposed shallow port project for the city of Harper-, Maryland County: Liberia Treasury Dept. , Bur. Mines and Geology unpub. rept., 2 p., maps. . i * Richards, J. G. , 1953, Report on tour in Eastern Province from Nyaake, Webbo to Mt. Dorthrow, Dwarbo Town, Gbjaldrue Clan, Konobo Chief dom: Liberia Treasury Dept<, Bur. I Mines and Geology unpub. rept. , 6 p., maps. i * Richards, J. G., 1954, Geologic report of Gbarnga District, Kokoya gold field, Central Province: Liberia Treasury ;Dept., Bur. Mines and Geology unpub. rept., 6 p., appendix; majps. ' i I i' '. ' ' * Richards* J. G. , 1954, Report on the conference'of Directors of British West African Geological Surveys hold in Freetown, Sierra Leone, February 19-27, 1954: Liberia Treasury £>fcpt., Bur. Mines and Geology unpub. rept., 6 p., appendices. , : ,, ; i * Richards, J. G. , 1957, Guide map to the Lofa diamond mining area: Liberia Treasury Dept., Bur. Mines and Geology unpub. map, 1:125,000. * Richards, J. G. , 1958, Report on the diamond producing areas of the Suehn- Bopolu and Sanokole Districts and iGrand Cape Mount County, September- December 1958: Liberia Treasury:Dept., ;Bur. Mines and Geology unpub. rept., 10 p. '\. ; ; 31 Sa^at/.ky, J. , lf)50, Notice explicative sur la feuille1 Bobo-Dioulasso Est. *.'.u-U- g eo I unique do reconnaissance.au 500.000°: French West Ai'rica Direction Mines, Dakar, ; Sagatzky, J. , 1050, Notice explicative dur la feuille Tenkodogo-Est. Carte ^coiogiquc dc reconnaissance au 500J 000°: 'French West Africa Direction Mines, Dakar. | i , Sagatzky, J. , 1950, Notice explicative sur la feuille;Tenkodogo Quest. Carte geologique de reconnaissance au 5001000°: .'French West Africa Direction Mines, Dakar, : i ' ' -. : I Scheibe, E. A., 1954, Die Eisenerz-Lagerstatte'Conakry in Franzosisch- Guinea (Westafrika): Stahl u. Eisen/v. 74; pt. 4, p. 215-219. I ! * Schermerhorn, W. , 1960, Proposal for the organisation of the survey of Liberia: (Liberia) Bur. Nat. Resources and; Surveys unpub. rept., 35 p. Schmitz, H. , 1960, Mikroskopische Unter suchung'von Brzproben der Bohrungen Zaweah 1-10, Bong Range: Du'sseldorf, .Gewerkschaft Exploration Lager stattenarchiv. Schnetzler, C. C. , Philpotts, J. A., and Thomas;, H. H., 1967, Trace element data on Ivory Coast tektites and ro!cks from the Bosumtwi crater, Ghana (abs. ): Meteoritics, v. 3, no. 3, p. 123. * Schuiling, R. D., 1967, Tin belts on the continents laround the Atlantic Ocean: Econ. Geology, v. 62, no. 4; p.i 540-550, illus. ; ! ; Schultze, J. H., 1965, Evolution and Revolution ih der ostafrikanischen Landwirtschaft: Neues Afrika, v. |7,. no, 7-8, p.: 252-255. i : ! ! i Schulze, W. O., 1964, Liberia. Wirtschafts-u. iVerkehrsentwicklung: Geog. Taschenbuch 1964/65, p. 185-213. j i * Schulze, W. O., 1967, Sozialgeographische und wirtschaftliche Aspekte des , Eisenerzbergbaues in Liberia unter besonderer Berucksichtigung der BinnenwaJiderung der Beschaftigten: Gesell. Erdkunde Berlin Zeitschr., v. 98, no. 1, p. 31-60, illus. i Scott Elliot, G. F., and Raisin, C. A., 1893, Report on the botany and geology of Sierra Leone: Colonial Repts. Misc. :Ser., no. 3 (Sierra Leone), * C. 6998. . ! ' ' : ! 32 * Seitz, J. K. , 1!)68, New methods of surveying natural resources from aircraft .aid spacecraft (abs. ): Geol. Mining Metall. Soc. Liberia Bull. , v. 3, i>. 76-77. SENTAB, 1958, LAMCO Joint Venture, Nimba mining project, harbour at Lower Buchanan: Stockholm and Monrovia, SENTAB Consulting and Supervising Engineers unpub. rept; , 3 y. , p. , illus. Shand, S. J. , 1918, Norite of Sierra Leone: IGeol. Mag., v. 5, no. 1, p. 21-23, j I : * Shaw, E. B. , 1955, World economic geography): 'New York, John Wiley & Sons, Inc. , 582 p. , illus. i j '; ! '; 1 l . i '' * '] j ' j ' * Sherman, Arthur, 1943, Report on the Bokon-'Jieday Reserve, Since County: Liberia Treasury Dept. , Bur. Mines unpub. rept. , 17 p. , illus. : ! . l d * Sherman, Arthur, 1943, Report on the mining; industry of the Gold Coast, suggestions for development of the'miriera^ industry in Liberia: Liberia Treasury Dept. , Bur. Mines unpiub'. rept. > 20 p. Sherman, Arthur, 1946, Report on the Bokon^Jeday) operations: Liberia Treasury Dept. , Bur. Mines unpub. rept* , , p. , ;'i I .:! * Sherman, Arthur, 1949-1954, Proposals for the exploration and development of the mineral resources of Liberia;: Liberija Treasury Dept. , Bur. Mines and Geology unpub. repts. . ; j & * Sherman, Arthur, 1954, Exploration and develbjp;ml$nt of the mineral resources of Liberia: Liberia Treasury Dept. i, Btib. Mines and Geology unpub. rept. , 5 p. .'= II ! Sierra Leone Surveys and Lands Department, 1$53. Atlas of Sierra Leone: Freetown, Sierra Leone Surveys jLahds iDept. . , ll! |:r * Sipe, R. J., 1954, Annual report, .1953-1954, Siberian Cartographic Service: Liberia Treasury Dept., Liberian Cartographic Service Ann. Rept., 24f^ A p. , illus. 1T___ !'i! 33 * Sipo, U. .1. , l!)f)G, Siberian aerial photographic and mapping report: Monrovia, (Li. S. ) Internal. Coop. Agency unpub. rept., 19 p. , illus. * .Skillings' Mining lie view, I'JGii, L.AMCO bcineficiating complex dedicated in Liberia: Skillings 1 Mining Rev. , v: 57; no. |18, p. 24. Soule de Lafont, D. , 1950, Cote d'lvoire, in Rapport annuel 1950 du Service Geologique de 1'A. O. F. : French We.st Africa Direction Mines, Dakar, , (1951). : I : Srivastava, S. P., 1958, Report on survey of diamond mining areas in and around Weasua, Suehn-Bopolu District, Western Province, Liberian hinterland: Liberia Treasury Dept., Bur.! Mines and Geology unpub. rept. , !' :; i j : ! I ; j * Srivastava, S. P., 1961, Report on geological Reconnaissance in Maryland County and adjacent areas: (Liberia)' Bu'r.j Nat. Resources and Surveys unpub. rept., 28 p. ! * Srivastava, S. P. , and Intsiful, J. D., 1958, Report on trip to Nimba: (Liberia) Bur. Nat. Resources and Surveys unpub. rept., 3 p., map. Stangl, E. , 1965, Electrical equipment for the Nimba open-cast iron ore mines in Liberia: Siemens Rev., v. ,,np.; 6. p. * Stanley Engineering Company, I960, Hydr.ologic data, Republic of Liberia: Monrovia, Stanley Engineering Company unpub. rept., 2 v., 79 and 15 p., appendices, illus. ' * Stanley Engineering Company, 196 , Mount) Coffee hydroelectric project: Monrovia, Stanley Engineering Company of Africa, pamphlet, 4 p. * illus. Stanley, W. R., 1965, Air transportation in L: beria: Sierra Leone Geog. Asso*c. Bull., v. 9, no. , p. 34-44.' ! ' * Stewart, W. E. , 1961, Geologic reconnaissance cff a section of Maryland County and vicinity: (Liberia) Burj Nat. Resources and Surveys unpub. rept. , 8 p., map. ] . * Stewart, W. E., 1966, Kolahun quad: (Liberia) Bur;. Nat. Resources and Surveys unpub. rept., 3 p. 34 ; . f ;; | r '.' --.. 1 ; :- i» f I' I"i Stewart, W. E., 1968, Prelinlnary geologic reppijt on 'mosaic block D-14: . Liberian Geol. Survey Memo. Rept;, 3lj,}2jp. ' J ! M j Stobernack, Just, 1968, Stratigraphie und Metkniorpholse des prakambrischen Grundgebirges der Bong Range ini Liberia: [ Tech. Univ. Clausthal, unpub. doctoral thesis, 185 p., illus. ! { I Stracke, K. J., 1965, Report pn prospectingPI .' ifori h diamond if erous deposits in the Sanniquellie-Bahn region, Liberia:! J^Eonroyia, Diamond Mining Corporation of Liberia Limited uppub.i rspt., 8 p., appendix, maps. ' ii ! ! Stracke, K. J., and Leuria, Basil, 196^; Quarterly report, September 1st- November 30th, 1963: Monrovia,!! St. Andrews Securities Limited unpub. rept., 3 p., appendices, maps.,!!; 1 ; | ij. I .-i' ,, ! i ! . " . .; - " ,. ... : . :; ' .' I \ < r .,' ' -.'.. v: ,VC , ; Streim, W., 1962, Berichte uber die geplogisciieiiUntersuchung der Eisenerzlagerstatte Bong Range:1! Dusse^orf,. Gewerkschaft Explora tion Lagerstattenarchiv" * 1961-1962.;II .1 t~-f I-[jH: '. < . i: ''v*'^',:: ;,-;,-.? i;.:',..V-,^ : ...%-,-'::)--:C_ r >ii',i:L-:'' ;* ' ' ;-!>', Tarciy, Vvos, 11)66, Alobilitc relative des elements au cours des phenomenes -'alteration cle quelques roches cristaUinete: jAlsace- Lorraine Service t \u-ie Geol. Bull., v. 19, no. 3-4,, p.. 255<-27,0 (incl. English, German, 1 t ' tt ' summ. ), illus. , ; ;' j X S '} ^ Tardy, Yves, 1967, Etude geochimique des eaux cl'une nappe d'arene en pays cristallin (Korhogo, Cote d'Ivoire):i Alsace- Iliorraine Service Carte Geol. Bull. , v. 20, no. 4, p. 235-255 (incjl. [English, German, Russian summ. ), illus. 1 ii |,; Thienhaus, Rolf, 1964, Geologische Berichte liber die .Untersuchung der Eisenerzlu^erstatte Bong Range: Di^sseldorf, Gewerkschaft Exploration Lagerstattenarchiv 1957J-1964. ;« ,! * Thienhaus, Rolf, 1964, Itabiritische Eisenerzlagersitatten der Erde - ein Uberblick: Gesell. Deutscher MetaU'hutten- u. iBergleute Schr., v. 14, p. 1-9, illus. ' :l ' '<\ * Thienhaus, Rolf, 1967, Die geologische Grundlagen j^er neuzeitlichen Eisenerzversorgung - Los fundamentos ;geolo^icos del aprovision- amiento moderno de minerales de hierro: Sliahl u. Eisen, v. 87, no. 19, p. 1117-1125, illus. ! j ; ; '. * Thienhaus, Jlolf, 1967, Montangeologische Broblemie-in den Entwicklungs- lahdern der Sudkontinente: Umschau i(Frankfiirt), v. 18, p. 577-583, illus. '; ! .Lj : ! ; : ' '. : ' Thomas, B. E., 1959, Transportation and physical geography in west Africa: California Univ., Los Angeles, Depiii of Geography, p. , mimeographed. i . ' : Tugarinov, A. I._, 1967, Geokhronologiya zapadnoy ^friki i severo^vostochnoy Brazilii /Geochronology of west Africa 4nd northeast Brazil/: Geokhimiya, ' no. 11, p. 1336-1349 (inc}. English sjumm. ),j illus. 36 ____ t I ' ''9t^ J UNESCO, 1968, Compte rendu du colloque1 suV leaijgranites de 1'Quest Africain. Proceedings of the symposium on the granites of west Africa: Paris, United Nations Edijc. Sci. jjCJhiltural Organization, 162 p., illus. . Ill I ' ' United Nations Special Fund, 1967, Liberia -j request for mineral survey in central and western region: Monrovia, jUnited Nations Special Fund unpub. rept. , 16 p., appendices. '!j I! ! Unsere ATH, 1964, Deutsche bauen Liberia- Stadt 'Song fur 15000 Menschen: Unsere ATH, Werkzeitung der August ; Thy&sjen-Hutte AG, Duisburg- Hamborn, v. 10, no. 4, p. 10-16,!.jillus.. U. S. Bureau of Mines, ,1965, Diamond - Buinea,1 i ;Slerra, Leone; Iron ore - Liberia, Sierra Leone; Titanium minerals i;* Jsierra Leone: \Ji S. Bur Mines Mineral Trade Notes, v | 61, noj. j,lf p. 13, 20-21, 22, 48. U. S. Bureau of Mines, 1967, Diamond - Sierra Lieone; U, S. Bur. Mines Mineral Trade Notes, v. 64, no. 6pp.J5..f h| U. S. Bureau of Mines, 1967, Diamond - ijjierra ijeonje; Iron ore - Ivory Coast,- Liberia: U. S. Bur. Mines MinteriJ Tradi Notes, v. 64, no. 7, p. 19, 23-24.' * r] j |jj: ;|j . U. S. Bureau of Mines, 1968, Barite - Liberia;'Irjonlore; - Sierra Leone: U.S; Bur. Mines Mineral Trade Notesj V||65j| no. 5, p. 4-5, 17. I ! I:! 'I: ' U. S. Bureau of Public Roads, Liberia Division; 1960, Annual report. Activities and progress of the highway project!! under the International Cooperation Administration program, fis rial ybar I960, July 1, 1959 to*June 30, 1960: Monrovia, U. Bur. c Roads, Liberia Div. Ann. Rept., 12 p., illus. !- ^ $ '. ">:. U. S. Department of Commerce, 1959, Basic U. S. Geolo^caT Survey, 1968," Liberia, Ji Geological Sun^^esearchiiS68, 3f , :^|Chajpte^'Ar|:;U.;:'S,.a,Geol/"Suryey.Prbf..[i?a*>er 6feo-^;p^ 182-183,;;'^JlJpj la?:.. --. I : 'j I 'f ' Viana, C. F., 1967, Microfosseis do cj 2taceo o i< trdeste brasileiro e . Africa ocidental (abs.): Cong. j liasileiIJ >> ? Geocie^nc. Bol. 26, p. 9, i ; t«! ; !| 1 ...... - . ^ '. i >'!! h " :| J ! - : " '" ! 38 "; ' ' ' - v ' .' I" « ' .'I I '! : Waldenstroin, E., 1963, The Lamco project! A ibmmercial contribution to African economic development: Swedislil Ironmasters' Assoc. Annals, v. 147. , j -. I Jit! , - V Wallin, K. G., 1957, Mount Nimba exploitation: ^Monrovia, LAMCO Liberian' American-Swedish Minerals Companyj unptib. .rept., 13 p. * Waters, A. E., Jr., 1966, Memorandum on diamond prospecting in Liberia to accompany the final report 1966 >submitt< d by the Diamond Mining Corporation of Liberia Limited: llpnc^on,} ' E 1 iamond Mining Corporation of Liberia Limited unpub. memo. ;{[2 p. :l. i :i Westermann, D., 1952, Geschichte Afrikas: IKolii ]i. Greven-Verlag, * White, R. W., and Baker, M. W. G., 1968, Geology \ot the Mano River Mine area: Geol. Mining Me tall. Soc. Liberia BJSlii, v. 3, p. 57-65, illus. * Wilson, N, W., 1952, Iron ore deposits inj'Siejrra Jjeone: Internal. Geol. Cong,;, 19th, Algiers 1952, .Symposium surtles Gis^n^nts de Fer du Monde, .;.V !" V. 1, p. 175-182. ., . ::. ' p (. ' '^ i ' . " /'." Wolf, W., and others, 1958, Betriebsvers^achizur Verhuttung von Conakry Erz: Stahlu. Eisen, y. 78, no. ,jjp. jl02Qj-|Q27, no. , p. 1100-1107. World Mining, 1969, Guinea. ... Bauxite ijaines planning increases in production: World Mining, v. 22, np. 1, pj; 75-76. * World Mining, 1969, Ivory Coast . . . Picsands-Mat her checking iron ore ; near Liberian border: World Minin|, y. 23; po. 2, 1. 39. v Worrall, Q. A., 1964, Is there;water unde i yojur gariden? : Liberian Naturalist, Nat. History Assoc. Liberia Jour., lv. 24 n'p.]i, p. 15-17. -^:^ *' li * Worrall, .Gl. A. ^ and Dinkins, E. L., 1965;. Soild ^ tne Monrovia District, a semi-reconnaissance survey: Lib* ria l/n^Hr. ,jjColl. Agriculture s "^ unpub. rept., 17 p,» map. Worthington, E. B.'; 1958t Scierice in the dc velcrpjnnjjntiof Africa, a review of the contribution of physical and bilog Leal |kn< >wlqdge south of the Sahara: Comm. for Tecfcu Coop, in Africa S< fith o( Sahara, ¥ «^^^'-v'^js^*.:^ti|A;^fe'^k^i:'^.^ ^ ' ."TH '' ' -. 't-.'-:':: Wotorson,, Ci*Si,> 1963, Geological report pi reconnaissance geological ." -. :>;'--. '''i-f''.''.^'A-f: -j__. -I 1" t'"':' * '"li - Jv con^ct^dl^ _ ^'_' Jf_ _ _1 A- _ 1* ""in *_ - the^Salala*»' r _ * ^*t .< .< Dist<*i^ « . >' jict, , . l^^Ji;--[( Sentral *^ Province^^ . r -. (Liberia)*_ ». "- j^J ^NatSt;Resour1:ii'::an 40 i ;;; ;., . , - -\ Zahringer, J., and Gentner, W», 1966, Si^avitel'nbyeiopredeleniye akliy- argonovogo vozrasta tektitov, stek61_Nordi^nge> Ris (FRG), Bosumtvi (Gaiia) i drugikh prirodnykh stekol /Comparative determination of the potassium-argon age of tektites, glasses of the Nordlinger_Ries (West Germany), Bosumtwi (Ghana), and other natural glasses^ Akad. Nauk SSSR Meteoritika, v. 27, p.;"l5Jl-i:52, tables. ~ '' , \ ; ; i;t \ - : * Zigtema, Arthur, and McCrary, R. J., 1068, B^mi Hills ores and their beneficiation: Geol. Mining Met all! t Soci. (Liberia Bull., v. 3, , p. 16-27,