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RI 5280 An Investigation Of Some Variables In The Treatment Of Scheelite With Soda Ash - SummaryBy F. W. Wessel
This report summarizes Bureau of Mines laboratory tests of four tungsten¬-bearing materials of various grades, The test work has demonstrated that the dry reaction between sodium carbonate and scheeli
Jan 1, 1956
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Cellular Concrete Applied To Deep Mining ? IntroductionBy M. Werner
Mining in the Coeur d'Alene Mining District has been going on for over 100 years with a long- term continuation very likely. Mining is presently carried out at depths below the -5000' horizo
Jan 1, 1986
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Upgrading of Phosphate Fines by Fatty Acid Flotation Using Amylase Enzyme as a Surface Modifier (Mining, Metallurgy & Exploration)By K. E. Yassin, A. Yehia, M. Amar
Phosphate fines (size ≤ 45 μm), from the Red Sea Region, Egypt, were subjected to beneficiation process to recover the phosphorite grains from such fines. The sample is characterized by low P2O5 conte
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Stock Piling - Past, Present, And FutureBy Richard J. Lund
Stock piling-and by that I mean well-organized stock piling on a substantial scale-is almost as old as the hills themselves. It was back in early Biblical times, as recounted in the Book of Genesis, t
Jan 1, 1949
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Roasting Arsenical Gold Ores and ConcentratesBy F. R. Archibald
Introduction It is the purpose of this paper to review the subject of roasting as preparation of refractory gold ores and concentrates for cyanidation, with particular reference to operations at th
Jan 1, 1949
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IC 7529 Phosphate-Rock Mining in Southeastern IdahoBy D. W. Butner
This report is concerned with the conditions affecting the methods and costs of mining phosphate rock in that part of the western phosphate field that is in Bear Lake and Caribou Counties in southeast
Oct 1, 1949
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High Energy Rockfall Barriers: A Design Procedure for Different ApplicationsBy A. Grimod
The European Guideline ETAG 027 - 2008 (?Guideline for European Technical Approval of Falling Rock Protection Kits?) defines the procedures to test rock fall barriers. Nowadays, this guideline is esse
Aug 1, 2013
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RI 9495 - A Field Trial for Sealing Abandoned Mine Shafts and Adits With Lightweight ConcreteBy E. H. Skinner
An abandoned mine shaft near Omar, in Logan County, W, was permanently sealed through a cooperative agreement between the West Virginia Department of Commerce, Labor, and Environmental Resources, Divi
Jan 1, 2010
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Oxide Reduction Processes in The Preparation of Rare-Earth MetalsBy C. K. C. K. Gupta
The rare earths in elemental form are required for a variety of scientific and technological purposes. They are not easily obtained in this form, due to the great chemical stability of the rare-earth
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RI 4402 Gaseous Reduction Methods For The Production Of Sponge IronBy Edward P. Barrett
The production of sponge iron is one of the earliest arts in the metal¬lurgy of iron and steel. The idea of producing iron direct from ore at temperatures lower than the melting point of, the iron has
Jan 1, 1949
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Foam Property Tests to Evaluate the Potential for Longwall Shield Dust ControlBy W. R. Reed, S. Klima, J. Driscoll, T. W. Beck
"Tests were conducted to determine properties of four foam agents for their potential use in longwall mining dust control. Foam has been tried in underground mining in the past for dust control and is
Jan 1, 2018
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Metallurgical Developments At Palabora ConcentratorBy Johann Steynberg
The design and construction of a Concentrator based on initial pilot plant work is rarely perfect. Palabora's plant was no exception although the basic objective to produce copper in a safely con
Jan 1, 1985
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Energy Geostructures: Analysis from Research and Systems Installed Around the WorldBy Tony Amis, Marco Barla, Alice Di Donna
"Energy geostructures are becoming an increasingly popular solution around the world for Developers looking to reduce CO2 and system running costs. Energy geostructures are geotechnical structures tha
Jan 1, 2017
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Revaluation Of Mine Rock Waste As A Substrate For Carbon SequestrationBy Hitch M.
Many mining wastes, especially those from the metal mining industry, have traditionally been treated as a matter of little or no value and in practice a cost burden. Some wastes, due to their reactiv
Jan 1, 2010
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USGS Critical Minerals ReviewBy J. H. Hammarstrom, S. M. Fortier, W. C. Day, S. J. Ryker, R. R. Seal
"The United States’ supply of critical minerals has been a concern and a source of potential strategic vulnerabilities for U.S. economic and national security interests for decades (for example, see S
May 1, 2019
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IC 7827 Cathodic Protection For Earth-Buried Pipelines And Other Metal Structures ? SummaryBy J. Howard Bird
The purpose of this publication is to discuss grounding mediums and the phases of grounding related to corrosion and cathodic protection. The material presented is believed to contribute to a better u
Jan 1, 1958
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Metallurgy, Process Control and Mineralogy Integration at the Kittila Mine, FinlandBy R. Thorpe, M. Dosbaba, A. Kopriva, A. Niiranen, J. Ruokanen
"Automated Mineralogy (AM) is an important diagnostic tool in flotation plants as it adds ore and particle mineralogical properties to traditional mass and chemical data. AM is used in project develop
Jan 1, 2017
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IC 9131 Foreign Direct Investment In The U.S. Minerals IndustryBy Louis J. Sousa
This Bureau of Mines report examines aggregate trends in foreign direct investment in the U.S. mining and mineral processing industries between 1977 and 1984, and provides an analysis of foreign inves
Jan 1, 1987
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The EnvironmentBy Melvin S. Taylor
The environmental control program at Cassiar Mine is an active one involving government, unions and company personnel all working together to achieve a goal- "A clean and safe working environment". Th
Jan 1, 1978
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The Politics Of Fear Governmental Control Of Coal MiningBy David S. Smith
Almost nine years after the assertion of enormous and pervasive federal control over coal mines by means of the Federal Coal Mine Safety and Health Act of 1969, 30 USC Section 801 et seq, as amended b
Jan 1, 1979