Context for Historic Mining Resources in the Black Hills and South Dakota

Total Page:16

File Type:pdf, Size:1020Kb

Context for Historic Mining Resources in the Black Hills and South Dakota CONTEXT FOR HISTORIC MINING RESOURCES IN THE BLACK HILLS AND SOUTH DAKOTA A GUIDE FOR IDENTIFICATION, INTERPRETATION AND EVALUATING ELIGIBILITY TO THE NATIONAL REGISTER OF HISTORIC PLACES CONTEXT FOR HISTORIC MINING RESOURCES IN THE BLACK HILLS AND SOUTH DAKOTA A GUIDE FOR IDENTIFICATION, INTERPRETATION AND EVALUATING ELIGIBILITY TO THE NATIONAL REGISTER OF HISTORIC PLACES Eric Twitty and Jay Fell, Ph.D Mountain States Historical 1011 Glenwood Dr. Lafayette, CO, 2010 Table of Contents Chapter 1: Mining in the Black Hills: A History…………………………………...….1 By Jay Fell, Ph.D Chapter 2: Background for Assessing Eligibility to the National Register of Historic Places…………………………………………………………………………………….17 By Eric Twitty Chapter 3: Mining Industry Property Types and their Eligibility Guidelines.…….36 By Eric Twitty Introduction and Definitions…..…………………………………………………36 Property Type: Placer Mine……………………………………………………...37 Gulch Placer……………………………………………………………...41 Stream Placer…………………………………………………………….44 River Bar Placer………………………………………………………….47 Blanket Placer……………………………………………………………47 Hydraulic Placer…………………………………………………………50 Property Type: Dredge Placer……………………………………………………54 Property Type: Hardrock Prospect……………………………………………….59 Prospect Complex………………………………………………………..65 Prospect Shaft……………………………………………………………67 Prospect Adit……………………………………………………………..69 Property Type: Hardrock Mine…………………………………………………..80 Shaft Mine………………………………………………………………..85 Tunnel Mine……………………………………………………………...89 Property Type: Open-Pit Mine………………………………………………….113 Property Type: Ore Treatment Mill…………………………………………….117 Amalgamation Stamp Mill……………………………………………...118 Concentration Mill……………………………………………………...122 Arrastra…………………………………………………………………128 Property Type: Smelter…………………………………………………………146 Chapter 4: Mining Settlement Property Types and their Eligibility Guidelines.…152 By Eric Twitty Property Type: Mining Settlement and Residence……………………………..152 Prospector’s Camp……………………………………………………...152 Workers’ Housing………………………………………………………155 Isolated Residence……………………………………………………...159 Unincorporated Settlement……………………………………………..159 Townsite………………………………………………………………..164 Property Type: Rural Historic Mining Landscape……………………………...179 Bibliography…………………………...………………………………………………185 Chapter 2 Figure 2.1 Carbonite Mine ruins 1950 Figure 2.2 Collapsed mine Figure 2.3 Underground mine workings Chapter 3 Figure 3.1 Placer mining at Bobcat Gulch Figure 3.2 Sluice near Rockerville Figure 3.3 Stream placer operation in Black Hills Figure 3.4 Hydraulic mining Figure 3.5 Hydraulic mining components Figure 3.6 Hydraulic mining components Figure 3.7 Gold Dredge at Mystic Figure 3.8 Dredge illustration Figure 3.9 Dredge site Figure 3.10 Keystone Mine entrance Figure 3.11 Windlass Figure 3.12 Horse whim Figure 3.13 Horse whim illustration Figure 3.14 Upright boilers Figure 3.15 Locomotice boiler Figure 3.16 Pennsylvania boiler Figure 3.17 Boiler at Golden Crest Mine Figure 3.18 Headframe illustration Figure 3.19 Single drum hoist Figure 3.20 Gasoline hoist Figure 3.21 Donkey hoist Figure 3.22 Single drum electric hoist Figure 3.23 White Spar Mine near Custer Figure 3.24 50-ton hoist at Golden Crest Figure 3.25 Hoist foundation illustration Figure 3.26 Mine shop illustration Figure 3.27 Common forges illustrations Figure 3.28 Primary ore bin illustration Figure 3.29 Mine complex at Deadwood Figure 3.30 White Spar mine near Custer Figure 3.31 Keystone Mine tunnel Figure 3.32 Shaft house cross section Figure 3.33 Hoist house Figure 3.34 Ventilation blower Figure 3.35 Ventilation blower foundations Figure 3.36 Straight-line steam compressor Figure 3.37 Straight-line steam compressor foundations Figure 3.38 Duplex steam compressor illustration Figure 3.39 Duplex steam compressor foundation illustrations Figure 3.40 Duplex steam compressor Figure 3.41 Duplex compressor foundation illustrations Figure 3.42 V-cylinder compressor foundation illustrations Figure 3.43 V-cylinder compressor Figure 3.44 Belted compressor illustration Figure 3.45 Four-post derrick headframe Figure 3.46 Two-post gallows headframe Figure 3.47 Hoisting vehicles Figure 3.48 Double-drum steam hoist Figure 3.49 Double-drum steam hoist foundation Figure 3.50 Double-drum electric hoist Figure 3.51 Direct-drive single-drum steam hoist Figure 3.52 Direct-drive single-drum steam hoist foundation Figure 3.53 Return-tube boiler steam generator Figure 3.54 Return-tube boiler steam generator foundation Figure 3.55 Hoodoo Mine sloped-floor ore bin Figure 3.56 Sloped-floor ore bin Figure 3.57 Backing block Figure 3.58 Drill-steel sharpener Figure 3.59 Concentration mill cross-section Figure 3.60 Concentration mill/leaching plant diagram Figure 3.61 Stampmill at Standby Mine Figure 3.62 Crushing diagram Figure 3.63 Homestake rod mill Figure 3.64 Ball mill Figure 3.65 Processing cross-section Figure 3.66 Jaw Crusher at Standby Mine Figure 3.67 Flotation sketch Figure 3.68 Cyanidation diagram Figure 3.69 Homestake sand vats for leaching Figure 3.70 Galena slime tanks Figure 3.71 Arrastra Figure 3.72 Arrastra Figure 3.73 Standby Mill near Rochford Figure 3.74 Deadwood Reduction Works Figure 3.75 Wheel and cam at stamp at Standby Mine Figure 3.76 Cam at Standby Mine Figure 3.77 Jaw Crusher Figure 3.78 Crushing rolls Figure 3.79 Stamp battery diagram Figure 3.80 Stamp battery pedestals Figure 3.81 Trommel screens Figure 3.82 Huntington mill Figure 3.83 Rod mill Figure 3.84 Ball mill Figure 3.85 Ball mill at Standby Mine Figure 3.86 Amalgamation tables at Amicus Mill Figure 3.87 Grinding pan diagram Figure 3.88 Percussion/bumping table Figure 3.89 Jig Figure 3.90 Frue vanners Figure 3.91 Vibration tables’ foundations Figure 3.92 Vibrating table Figure 3.93 Horizontal steam engine Figure 3.94 Electric motor Figure 3.95 Overhead drive shafts and belts Figure 3.96 Smelter cross-section Chapter 4 Figure 4.1 Prospectors’ camp Figure 4.2 Log cabin interior Figure 4.3 Bear Gulch cluster of buildings Figure 4.4 Keystone 1929 Figure 4.5 Terraville boarding house Figure 4.6 Rockerville log cabin Figure 4.7 Collapsed cabin Figure 4.8 Privy pits Figure 4.9 Rockerville commercial building Chapter 2: Background for Assessing Eligibility to the National Register of Historic Places CHAPTER 2 BACKGROUND FOR ASSESSING ELIGIBILITY TO THE NATIONAL REGISTER OF HISTORIC PLACES Review of the National Register of Historic Places Designation Program The National Register of Historic Places is a program that recognizes historically significant cultural resources on both an individual basis and collectively in the form of districts and landscapes. These resources may be important on local, statewide, or national levels, and they include objects, buildings, structures, and archaeological sites. Although the National Park Service oversees the National Register of Historic Places (NRHP), the agency charged the South Dakota State Historical Society (SDSHS) with applying the program in South Dakota. The SDSHS can be contacted regarding the benefits and limitations of listing a property on the NRHP. Official listing on the NRHP is a status that historic properties achieve after a formal nomination and review process. Being eligible for the NRHP is a different status than being officially listed. An eligible resource meets the requirements for being listed, but has not yet been formally nominated and accepted. A determination of eligible affords the resource some protection against invasive Federal projects such as the cleanup of abandoned mines, and is a platform for officially nominating resources to the NRHP. Being officially listed not only provides the resource with the same level of protection, but also opens the gateway for grant programs, other forms of assistance, and recognition. A process of evaluation is required to recommend a historic resource eligible for the NRHP. To structure the process, the National Park Service defined requirements that a historic resource must meet. In overview, the requirements include: assessing the resource’s physical integrity, identifying the resource’s timeframe, determining how or why the resource is important, and then producing a statement of significance. It should be noted that in its National Register Bulletin: How to Complete the National Register Registration Form publication, the National Park Service explains the requirements in reverse order. The mining context, in contrast, has been formatted primarily for field use by a diverse readership, and therefore presents the requirements in the order below. Physical Integrity Physical integrity is a fundamental quality that a mining-related resource must possess to qualify for the NRHP. Simply put, the resource must be intact enough to clearly convey its type of entity, and the timeframe during which it was important. Physical integrity is the first requirement presented in this chapter because without integrity, a resource will be ineligible and the process of evaluation need go no farther. 17 Chapter 2: Background for Assessing Eligibility to the National Register of Historic Places NRHP Seven Aspects of Integrity To support the official nomination process, the National Park Service quantifies integrity as seven specific aspects. A resource must possess some, but not all, of the aspects to be nominated. Although the aspects were broadly designed for all historic and prehistoric resources, the seven aspects as applied to mining resources are: Location: Location usually refers to buildings, structures, and objects, often machinery in the case of mining resources. To retain integrity of location,
Recommended publications
  • The Iron-Making Process
    Hopewell Furnace National Historic Site www.nps.gov/hofu Teacher’s Guide The Iron-Making Process The Ingredients The four main ingredients for making iron were present in the area of Hopewell and were a reason for the furnace’s location. I. Wood A. Used as a primary energy source in village operations 1. As charcoal to power the furnace and blacksmith shop 2. As fuel for heating and cooking B. Used as building material for: 1. Homes 2. Wagons and equipment II. Water A. Used to turn the water wheel connected to the bellows which forced blasts of air into the furnace to increase the heat B. Used for: 1. Drinking 2. Bathing 3. Cooking 4. Washing 5. Cleaning III. Iron Ore Iron ore was dug from open-pit mines near Hopewell, then hauled to Hopewell Furnace in carts and wagons IV. Limestone Used as a “flux,” which removed impurities from the ore as the iron ore was smelted; it was quarried near Morgantown and from Hopewell Plantation lands The Process This process was also called smelting. I. In the furnace, the charcoal burns with a great amount of heat. II. The water wheel was attached to a huge bellows and later to blowing tubs — like can be seen at Hopewell today — which blasted the charcoal with air to increase the heat. III. The furnace was filled, or “charged,” from the top in this order: A. Fire B. Charcoal Iron-Making Process Page 1 C. Iron Ore D. Limestone E. Charcoal F. Iron Ore G. The process continued and repeated as the ore melted IV.
    [Show full text]
  • Mines An~ Mf 1Terals of Ulllasbf Ngton
    I I I I I t I t I I t I I I I l I l I I t I I I I I I t • I I I I I I f Mines an~ Mf1terals of Ulllasbf ngton . • A~AL REPORT or GEORGE A. BETHUNE, FIRST STATE GEOLOGIST. OT.Y~rT'lA, \V A!':IT.: O. C. WOITE, tiTAT.E .PRINT.ER, 1801. I I t I I I t I I I I I I ' I f I I f I I I t I I t I f I I I I I t I I Tacoma, Wash.) Jan. ..............................1 891. To ······-·····-·················································-·····························.··········· I take pleasure in presenting this, the first annual report upon the Mines and Minerals of Washington. Yours very truly, GEO. A... BETHUNE, ~ First State Geologist. Mines anb Minerals of Ulllasbington . • ANNUAL REPORT OF GEORGE A . BETHUNE, FIRST STATE GEOL OGIST. OLYMPIA, WASU.: O. C. WU I TE, STATE PRI NTER. 1891. • ANNUAL REPORT. 'l'o his Excellency, Ct1ARU:S E. LAUG HTON, Governor·, and tlie lion­ orable, the membm·s of the Seri ate and House of Rep1·esentatives of the State of Washington: G~NTLEMEN- Herewitb find my annual report, as the first ~tate geologist of the State of Washington. In submitting this report for your consideration, and possibly for dissemination throughout the state, I beg leave first to call your attention to the following facts: By act of the legislature, the first to convene in this state, the office of which I have the honor to be the possessor, was created in March, 1890, and my appointment as state geologist and con­ firmation by the senate followed shortly thereafter.
    [Show full text]
  • Westray Story a Predictable Path to Disaster
    3 . // ^V7 / C‘H- The Westray Story A Predictable Path to Disaster Report of the Westray Mine Public Inquiry Justice K. Peter Richard, Commissioner Volume One November 1997 LIBRARY DEPARTfvtEr,T Or NATURAL RESOURCES. \ HALIFAX, NOVA SCOTIA \ ^V 2,2,4- VJ. I Published on the authority of the Lieutenant Governor in Council c, by the Westray Mine Public Inquiry. © Province of Nova Scotia 1997 ISBN 0-88871-465-3 Canadian Cataloguing in Publication Data Westray Mine Public Inquiry (N.S.) The Westray story: a predictable path to disaster Includes bibliographical references. Partial contents: v.[3] Reference - v.[4] Executive summary. ISBN 0-88871-465-3 (v.l) - 0-88871-466-1 (v.2) - 0-88871-467-X ([v.3])-0-88871-468-8 ([v.4]) 1. Westray Mine Disaster, Plymouth, Pictou, N.S., 1992. 2. Coal mine accidents—Nova Scotia—Plymouth (Pictou Co.) I. Richard, K. Peter, 1932- II. Title. TN806C22N6 1997 363.11’9622334'0971613 C97-966011-4 Cover: Sketch of Westray mine by Elizabeth Owen Permission is hereby given by the copyright holder for any person to reproduce this report or any part thereof. “The most important thing to come out of a mine is the miner.” Frederic Le Play (1806-1882) French sociologist and inspector general of mines of France » At 5:20 am on 9 May 1992 the Westray mine exploded taking the lives of the following 26 miners. John Thomas Bates, 56 Trevor Martin Jahn, 36 Larry Arthur Bell, 25 Laurence Elwyn James, 34 Bennie Joseph Benoit, 42 Eugene W. Johnson, 33 Wayne Michael Conway, 38 Stephen Paul Lilley, 40 Ferris Todd Dewan, 35 Michael Frederick MacKay, 38 Adonis J.
    [Show full text]
  • The La Grange Mine Site Historical Lesson Plan Grade 7
    Teaching About Historic Places Lesson Plan Grade 7 The La Grange Mine: Changing the Landscape in the Quest for Gold Located on the slopes of the Trinity Mountains, the La Grange Mine serves as a silent reminder of what people will do in their quest for gold. Today, all that remains of this mine are some discarded things left by the miners. Only the scars on the land and the isolated items left behind can tell us the story of this once-great mine. The La Grange Mine story began in the late 1860s. It was during this time that the mountains west of Weaverville in Trinity County became a center for hydraulic gold mining. The gold found in this area was in such low amounts that special methods were needed to remove it from the ground. The method used was known as hydraulic mining. It involved washing the dirt with large amounts of water. In order to make sure that there was enough water for hydraulic mining to take place, in 1873 a group of local miners got together to form the Weaverville Ditch and Hydraulic Mining Company. This company was bought by Baron Ernest de La Grange for $250,000. Between 1893 and (Top photo shows La Grange Mine circa 1930s; Bottom photo shows the La Grange workers with gold 1915, the La Grange Mine became bars recovered from mine - California Department of Conservation, Division of Mines and Geology Library, and Trinity County Historical Society Archives Photos.) the largest hydraulic mine in California. By the early 20th the La Grange Mine produced $3,500,000 worth of gold.
    [Show full text]
  • Mining's Toxic Legacy
    Mining’s Toxic Legacy An Initiative to Address Mining Toxins in the Sierra Nevada Acknowledgements _____________________________ ______________________________________________________________________________________________________________ The Sierra Fund would like to thank Dr. Carrie Monohan, contributing author of this report, and Kyle Leach, lead technical advisor. Thanks as well to Dr. William M. Murphy, Dr. Dave Brown, and Professor Becky Damazo, RN, of California State University, Chico for their research into the human and environmental impacts of mining toxins, and to the graduate students who assisted them: Lowren C. McAmis and Melinda Montano, Gina Grayson, James Guichard, and Yvette Irons. Thanks to Malaika Bishop and Roberto Garcia for their hard work to engage community partners in this effort, and Terry Lowe and Anna Reynolds Trabucco for their editorial expertise. For production of this report we recognize Elizabeth “Izzy” Martin of The Sierra Fund for conceiving of and coordinating the overall Initiative and writing substantial portions of the document, Kerry Morse for editing, and Emily Rivenes for design and formatting. Many others were vital to the development of the report, especially the members of our Gold Ribbon Panel and our Government Science and Policy Advisors. We also thank the Rose Foundation for Communities and the Environment and The Abandoned Mine Alliance who provided funding to pay for a portion of the expenses in printing this report. Special thanks to Rebecca Solnit, whose article “Winged Mercury and
    [Show full text]
  • The Pharaohs' Gold: Ancient Egyptian Metallurgy
    THE PHARAOHS' GOLD: ANCIENT EGYPTIAN METALLURGY TI n an age when mining is conducted on an lode country increased in size and scale, the clam­ industrial scale through the use of explosives, or for more efficient means of processing ores huge draglines, and enormous ore-carriers, there grew ever more strident and in response to this is a tendency to forget that mining was, and is, an demand milling processes grew increasingly activity involving the concerted efforts of human sophisticated. Greever notes that California's beings. In his depiction of mining activities in hardrock miners first relied on arrastras and California's nineteenth-century gold fields, Chilean mills to reduce their ores. When these William S. Greever in The Bonanza West: The Story devices failed to provide satisfactory returns of the Western Mining Frontier, 1848-1900 calls to California's argonauts then began to employ mind the human factor involved in the extraction stamp mills to process their gold ores.3 of ore from beneath the earth's surface: The processes underlying the operation of a stamp mill had changed little in the centuries [T)he deepest shafts in California leading up to the California gold rush.4 Greever quartz mining went down ... about compares the basic function of a stamp to that of a three hundred feet; often a deposit was pharmacist's mortar and pestle. In its simplest worked by a tunnel into a hillside or application, a stamp was dropped repeatedly on a even an open cut. The men used hand piece of metallic ore until the ore was reduced to drills, sledges, and a little black pow­ powder.
    [Show full text]
  • A History of Tailings1
    A HISTORY OF MINERAL CONCENTRATION: A HISTORY OF TAILINGS1 by Timothy c. Richmond2 Abstract: The extraction of mineral values from the earth for beneficial use has been a human activity- since long before recorded history. Methodologies were little changed until the late 19th century. The nearly simultaneous developments of a method to produce steel of a uniform carbon content and the means to generate electrical power gave man the ability to process huge volumes of ores of ever decreasing purity. The tailings or waste products of mineral processing were traditionally discharged into adjacent streams, lakes, the sea or in piles on dry land. Their confinement apparently began in the early 20th century as a means for possible future mineral recovery, for the recycling of water in arid regions and/or in response to growing concerns for water pollution control. Additional Key Words: Mineral Beneficiation " ... for since Nature usually creates metals in an impure state, mixed with earth, stones, and solidified juices, it is necessary to separate most of these impurities from the ores as far as can be, and therefore I will now describe the methods by which the ores are sorted, broken with hammers, burnt, crushed with stamps, ground into powder, sifted, washed ..•. " Agricola, 1550 Introduction identifying mining wastes. It is frequently used mistakenly The term "tailings" is to identify all mineral wastes often misapplied when including the piles of waste rock located at the mouth of 1Presented at the 1.991. National mine shafts and adi ts, over- American. Society for Surface burden materials removed in Mining and Reclamation Meeting surface mining, wastes from in Durango, co, May 1.4-17, 1.991 concentrating activities and sometimes the wastes from 2Timothy c.
    [Show full text]
  • Flow Rate Equation for Suppressed and Submerged Sluice Gates ITRC Report No
    Flow Rate Equation for Suppressed and Submerged Sluice Gates www.itrc.org/reports/sluicegate.htm ITRC Report No. R 20-001 Flow Rate Equation for Suppressed and Submerged Sluice Gates Prepared by Charles M. Burt Albert J. Clemmens Kyle Feist May 2020 IRRIGATION TRAINING & RESEARCH CENTER California Polytechnic State University San Luis Obispo, CA 93407-0730 Office Phone: (805) 756-2434 FAX: (805) 756-2433 www.itrc.org Reference to any specific process, product or service by manufacturer, trade name, trademark or otherwise does not necessarily imply endorsement or recommendation of use by either California Polytechnic State University, the Irrigation Training & Research Center, or any other party mentioned in this document. No party makes any warranty, express or implied and assumes no legal liability or responsibility for the accuracy or completeness of any apparatus, product, process or data described. This report was prepared by ITRC as an account of work done to date. All designs and cost estimates are subject to final confirmation. Flow Rate Equation for Suppressed and Submerged Sluice Gates www.itrc.org/reports/sluicegate.htm ITRC Report No. R 20-001 Acknowledgements This work was funded by the California Dept. of Water Resources (Agreement No. 4600011908) and the USBR Mid-Pacific Region. Notation The following symbols are used in this report: a = relative gate opening; B = horizontal dimension of the rectangular sluice gate opening; Cc = a dimensionless contraction coefficient equaling the ratio of the area of the vena contracta
    [Show full text]
  • Secretary Old Arrastra Gold Mining Co
    Wednesday, March 25, 1905 THE SUMPTER MINER &XWaMWWWMto t If you will plve us just n few min- i utes of your valuable timo we will briefly set forth the Merits and Future Possibilities of Our Property. We know we have a splendid Busi- ness Proposition, and believe we are rendering good service in spreading the Untinted Facts before you. We wish we had an hour to talk the mat- ter all over with you; better still, we should like to take you to our Property and show you every Foot of Gold Bearing Ground. Since these are impossibilities, for the present at least, we kindly ask you to listen to our story. We are an Incorporated Body, known as the OLD ARRA8TRA GOLD MINING COMPANY. The Capitalization has been fixed at One Million Dollars, Divided into One Million Shares of the Par Value of One Dollar Each. One half of this stock has been Reserved as Treasury Stock, the sale of whloh will provide ample funds to Further Exploit the Property and Purchase the Necessary Machinery to make it a steady and Profitable Producer. This Stock is and carries no Personal Liabili- ties. Since our Incorporation is Under the Laws of Arizona. It is also Fully Paid when the Certificate is Issued to the Purchaser. In view of our very reasonable capitalization, Net Profit of only Ten Thousand Dol- V lars Per Month, would pay Twelve per cent per annum, on the par value of the entire stock, or the Enormous Profit of .Ono Hundred and Twenty per cent per annum on the present price of Btock.
    [Show full text]
  • Treatment and Microscopy of Gold
    TREATMENT AND MICROSCOPY OF GOLD AND BASE METAL ORES. (Script with Sketches & Tables) Short Course by R. W. Lehne April 2006 www.isogyre.com Geneva University, Department of Mineralogy CONTENTS (Script) page 1. Gold ores and their metallurgical treatment 2 1.1 Gravity processes 2 1.2 Amalgamation 2 1.3 Flotation and subsequent processes 2 1.4 Leaching processes 3 1.5 Gold extraction processes 4 1.6 Cyanide leaching vs. thio-compound leaching 5 2. Microscopy of gold ores and treatment products 5 2.1 Tasks and problems of microscopical investigations 5 2.2 Microscopy of selected gold ores and products 6 (practical exercises) 3. Base metal ores and their beneficiation 7 3.1 Flotation 7 3.2 Development of the flotation process 7 3.3 Principles and mechanisms of flotation 7 3.4 Column flotation 9 3.5 Hydrometallurgy 10 4. Microscopy of base metal ores and milling products 10 4.1 Specific tasks of microscopical investigations 11 4.2 Microscopy of selected base metal ores and milling products 13 (practical exercises) 5. Selected bibliography 14 (Sketches & Tables) Different ways of gold concentration 15 Gravity concentration of gold (Agricola) 16 Gravity concentration of gold (“Long Tom”) 17 Shaking table 18 Humphreys spiral concentrator 19 Amalgamating mills (Mexican “arrastra”, Chilean “trapiche”) 20 Pressure oxidation flowsheet 21 Chemical reactions of gold leaching and cementation 22 Cyanide solubilities of selected minerals 23 Heap leaching flowsheet 24 Carbon in pulp process 25 Complexing of gold by thio-compounds 26 Relation gold content / amount of particles in polished section 27 www.isogyre.com Economically important copper minerals 28 Common zinc minerals 29 Selection of flotation reagents 30 Design and function of a flotation cell 31 Column cell flotation 32 Flowsheet of a simple flotation process 33 Flowsheet of a selective Pb-Zn flotation 34 Locking textures 35 2 1.
    [Show full text]
  • Pike Law Geology Report by Colin Fowler
    Geology of the Pike Law area. The Pike law mine site lies astride the Newbiggin to Westgate road, bounded on the east by Flushiemere beck and on the west by Westerbeck, with Broadley Hill at the NE corner being the highest point at 530m. Dunham describes the area: “The outcrop of the beds between the base of the Great Limestone and the Firestone on Pike Law, between Wester Beck and Flushiemere Beck, is traversed by a remarkable complex of veins.” (PP 243) Details of the geology have been given by Dunham, (1948 &1990); Bridges and Young, (2007); Bevins et al, (2010). Geological Survey of England and Wales 1:63,360/1:50,000 geological map series, New Series, sheet 25, Alston. The area has been worked by shaft, adit and hush, with 3 named areas of hush to the East of the road, Leonard’s Hush; Pikelaw Hush and Flask Hushes. To the West of the road, West End Hushes. There are a complex of leats and old dams forming reservoirs on both sides of the road, though non of them seem to have been able to hold sufficient water to enable hydraulic flushing alone to have created the hushes that we see. It is most likely to have been quarried and the water used for washing the mineral. “The production of lead concentrates from 1852 to 1891, when all work ceased was only 1725 tons.” (Dunham) “Surface evidence suggests that the area had been heavily worked prior to 1852, and what is recorded is the last gleanings of an old mining field” (Fairburn, A 2009) The figure given in Dunham may be optimistic, J.
    [Show full text]
  • An Issue Dedicated to Solutions for the Modern Mining Industry
    Metso’s customer magazine » ISSUE 1/2017 Mining minds An issue dedicated to solutions for the modern mining industry More efficiency Six-fold reduction Longer wear life and with less energy in moisture content fewer liner changes 06 and water 18 at Olenegorsky GOK 28 reduce costs “Metso has gone beyond combining and re-releasing technology based on prior designs. Its solution is more efficient, lasts longer and reduces operating costs.” mining Results mining is PUBLISHED BY EDITOR-IN-CHIEF © Copyright 2017 PRINTING Metso’s customer magazine Metso Corporation Inka Törmä, Metso Corporation. Hämeen Kirjapaino Oy, showcasing our work and [email protected] All rights reserved. February 2017 Töölönlahdenkatu 2, the success of our customers. P.O. Box 1220, DESIGN AND LAYOUT Reproduction permitted ISSN SUBSCRIPTIONS FI-00101 Helsinki, Brandkind, brandkind.fi quoting “Results mining” 2343-3590 To receive your personal Finland as source. ENGLISH LANGUAGE ADDRESSES 4041 0209 copy, please contact your Printed matter tel. +358 20 484 100 Kathleen Kuosmanen All product names used Metso customer data nearest Metso office or HÄMEEN KIRJAPAINO OY www.metso.com are trademarks of their the e-mail provided. respective owners. This magazine, including all claims regarding operational performance, is intended for sharing information on successful customer cases. Metso makes no warranty or representation whatsoever, either express or implied, that similar or any performance levels or improvements are achievable for all sites or for any particular site. Metso assumes no legal liability for any use of information contained in this presentation. If requested, Metso can execute a site specific survey to provide an estimate of performance or performance improvement for a specific site and operation.
    [Show full text]