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Contract Mining and its Role in Gold Mine DevelopmentBy W. Joseph Schlitt, Donald B. Swanson
The paper provides an overview of the role that contract mining plays in the minerals industry. Particular emphasis is on contract mining and its place in the development and operation of small to med
Jan 1, 1987
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Developing The Simon Silver MineBy Walter N. Campbell
The Simon Silver Mine is located near Mina, Nevada, approximately 50 miles northwest of Tonopah and 40 miles east of Hawthorne. It is an old property which was last worked in 1932 and closed operation
Jan 1, 1967
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Recovery Of Metal Values From Copper Slags By Flotation And Roasting With PyriteBy G. Bulut
The recovery of copper and cobalt from ancient copper slags from the Küre region of Turkey was investigated. A fayalitic-type of ancient copper slag containing 1.24% Cu, 0.53% Co and 53.16% Fe were su
Jan 1, 2007
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Enhanced flotation separation of phosphate and dolomite using a new amphoteric collectorBy C. L. Jiang, B. K. Parekh, X. Shao
Among the impurities present in phosphate ore, dolomite is the most difficult to remove. This is because dolomite and phosphate have similar chemical compositions and because the dissolved species of
Jan 1, 1999
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The Relationship Between Tunnel Convergence and Machine Operational Parameters and Chip Size for Double Shield TBMs— A Case History of Ghomroud Water Conveyance TunnelBy Jamal Rostami, Ebrahim Farrokh
Selection of tunneling method, specially the use of shielded machines for application in deep rock tunnels can be heavily impacted by presence of ground convergence and squeezing conditions. Tunnel co
Jan 1, 2007
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Optimization of the Flotation of Low‑Grade Phosphate Ore Using DOE: a Comparative Evaluation of Fatty Acid Formulation to Sodium Oleate - Mining, Metallurgy & Exploration (2023)By Abdelaziz Baçaoui, Imane Aarab, Abdelrani Yaacoubi, Khalid El Amari, Abderahman Etahiri
Phosphate ores upgraded by flotation are widely used as vital raw materials for the sustainable production of phosphate fertilizers to maintain the food supply. High-grade phosphate reserves become mo
Dec 7, 2022
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The Mine Management Support System: A Knowledge-Based System For Better Management Of Underground Coal MinesBy R. L. Grayson
Productivity achievements in underground coal mining over the past ten years highlight the improvement of management practices as well as the adoption of new technology. Research findings and results
Jan 1, 1990
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Planning and Designing For Mining ConservationBy David B. Brooks, Roger L. Williams
Control of the environment is as old as mining. Engineers have always had to consider how best to deal with the surface, and the character of the surface environment always affects mining method in so
Jan 1, 1973
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Modeling And Field Verification Of Roof-Bolt SystemsBy Thomas W. Smelser
A full-scale geotechnical model of a 15-foot (4.6 m) wide coal mine entry in correlation with computer finite-element analysis (FEA) is being employed at the Bureau of Mines Spokane Research Center fo
Jan 1, 1982
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Processing Molybdenite Concentrate By An Acid Bake-Leach-Flotation MethodBy H. Rush Spedden
A process has been developed and piloted to reject copper, lead, iron, phosphorus, bismuth, antimony, elemental sulfur, and insol from molybdenite concentrate without decomposing the contained molybde
Jan 1, 1971
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Hydrochloric Acid Leach Processes For Copper Concentrates ? IntroductionBy W. W. Harvey
The work to be described was part of an exploratory research program directed toward identifying potentially useful but little known reactions in extractive metallurgy. In particular, the major copper
Jan 1, 1976
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Evaluation Of Design And Performance - Porter Square Transit Station Chamber LiningBy David E. Thompson, Andrew F. McKown, Herbert H. Einstein, Amr S. Azzouz
INTRODUCTION Design of supports for underground chambers in rock has undergone considerable development. This becomes evident when comparing support dimensions of subway station caverns built in th
Jan 1, 1983
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A New Method To Correlate Radiometric And Chemical Assay Values In Uranium Deposits - IntroductionBy Michel Dagbert
With the growing demand for energy, explora¬tion for uranium deposits has dramatically increased in the past few years. Since the early ages of uranium exploration, natural gamma ray logs has proved f
Jan 1, 1979
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Carbonatites: An Important Source For Space-Age MaterialsBy D. P. Gold
Major sources and reserves of Cb/Nb, Ta, REE, Y, Sc, Zr, Hf, Cu, apatite and vermiculite may be concentrated in primary and secondary minerals associated with different stages and depths of emplacemen
Jan 1, 1991
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Routine Mineral Composition Characterization By Electron Microprobe Applied To Base And Precious Metal ExplorationBy Erich U. Petersen
Chemical zoning studies of mineralization can be useful in guiding exploration efforts. They permit one to determine the limits of mineralization and to correlate mineralized intervals in drill holes.
Jan 1, 1991
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A review of digital transformation in mining (MME Extended Abstracts)By Pratt Rogers, Aaron Young
This paper considers the mining industry’s need for digital transformation (DT) and presents a three-part review of the foundational components of the DT process: ubiquitous data, connectivity and dec
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Wolframite Flotation With Chelating Collector And Neutral Oil SynergistBy Weibai Hu
The flotation separation of wolframite from fluorite and quartz is investigated with chelating agents and neutral oil as synergic collectors. Test results indicated that a-nitroso-ß-naphthol has a str
Jan 1, 1985
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Novel Flocculants For The Treatment Of Oil Sand TailingsTwo new inorganic-organic hybrid polymers, Al(OH)3-polyacrylamide (Al(OH)3-PAM) and Mg(OH)2-polyacrylamide (Mg(OH)2-PAM) were synthesized and successfully applied for the treatment of oil sand tailing
Jan 1, 2012
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Electrochemistry Of Pyrite And Its Significance In Sulphide FlotationBy H. Majima
In spite of the importance of the presence of pyrite in the flotation of sulphide ores, not many studies have been made from the electrochemical point of view. It is generally recognized that the oxid
Jan 1, 1971
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Mine PreplanningBy Christopher J. Bise
INTRODUCTION Before a mine is planned in detail, a preliminary analysis is often conducted. This preplanning permits the mining engineer to make a rapid assessment as to whether or not a particula
Jan 1, 1986