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IC 8447 Secondary Gold In The United States
The Bureau of Mines analyzed the cycle of secondary gold to determine the quantity of gold not being recovered from scrap, and to identify areas for research to increase the supply of gold from scrap.
Jan 1, 1970
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IC 8581 Technologic Trend In The Minerals Industry, 1971
This report, the second in an annual series, summarizes information on latest technological developments and advances, and identifies trends in mining and metallurgy based on a review of activities in
Jan 1, 1973
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RI 9660 - Evaluation Of Systems To Monitor Blind Areas Behind Trucks Used In Road Construction And Maintenance: Phase 1
By Todd M. Ruff
The majority of fatalities that occur in road construction work zones in the United States involve a worker being struck by a piece of construction equipment or other vehicle. The Spokane Research La
Jan 1, 2004
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IC 8543 Technology And Use Of Lignite - Proceedings: Bureau Of Mines-University Of North Dakota Symposium Bismarck, N. Oak., May 12-13, 1971
This Bureau of Mines report contains the proceedings of a symposium cosponsored by the Bureau of Mines and the University of North Dakota concerning utilization and technology of Western coals and lig
Jan 1, 1972
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RI 8128 A Method for Computing Stabilization Pressures for Excavations in Incompetent Rock - With Computer User Information
By J. D. Dixon
This Bureau of Mines report describes a technique for determining the confining pressures that must be provided for stabilizing underground openings in incompetent rock. The technique is adapted for u
Jan 1, 1976
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RI 3206 Washability Studies of Coal from the Mary Lee Bed at the Bankhead Mine, Bankhead, Ala.
By B. W. Gandrud, A. C. Richardson
"INTRODUCTION The Bankhead mine of the Cane Creek Coal Mining Co. is in the central part of Walker County, Ala., 4 miles south of Jasper. The Mary Lee bed in this part of the State yields a practicall
May 1, 1933
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OFR-94-79 Innovative Machine Design Concepts - Conventional Loader, Auger Cutter, Ranging Head Miner, Rib Clean Up Machine
By A. Baldwin
Reports technical progress in designing four machines to be used in mining coal underground, applying innovative concepts at the design stage (instead of add-ons). A study phase was followed by design
Jan 1, 1976
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Case History Of The Response Of A Longwall Entry Subjected To Concentrated Horizontal Stress
By D. Oyler
The National Institute for Occupational Safety and Health (NIOSH) Pittsburgh Research Laboratory (PRL), RAG Pennsylvania and Strata Control Technologies of Australia collaborated in an intensive study
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IC 8775 Spontaneous Oxidation And Combustion Of Sulfide Ores In Underground Mines - A Literature Survey
By Donald J. Ninteman
This Bureau of Mines publication is a literature study of the problem of spontaneous oxidation and combustion of sulfides in underground mines. It summarizes the present-day hazards, process mechanism
Jan 1, 1978
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RI 5221 Analyses Of Tipple And Delivered Samples Of Coal (Collected During The Fiscal Year 1954) ? Introduction
By S. J. Aresco
The Bureau of Mines has been active in promoting the purchase of coal for Government use under specifications that define the requirements in terms of heating value of the coal, expressed in British t
Jan 1, 1956
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IC 6447 Milling Methods At The Hughesville Concentrator Of The St. Joseph Lead Co., Hughesville, Mont. ? Introduction
By Wm. O. Vanderburg
This paper describing the milling methods at the Hughesville concentrator of the St. Joseph Lead Co., Hughesville, Mont., is one of a series of similar papers being prepared by the U. S. Bureau of Min
Jan 1, 1931
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RI 2544 Lead-Zinc Separation By Volatilization
By G. L. Oldright
"The various districts in the United States where complex lead-zinc ores occur are too well known to require description, there being hardly a mining State with any large amount of ores of either meta
Nov 1, 1923
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Longwall Shield Recovery Using Mobile Roof Supports
By Allen McComas, Frank Chase, Phyllip Worley
Longwall mining has gained the reputation as being the safest extraction method in underground coal mines. However, one of the most difficult tasks associated with longwall mining is moving the face
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IC 8082 Rare-Earth Compounds As High-Temperature Refractories: A Bibliography ? Introduction And Summary
By Sara Jane Boles
In recent years the interest in rare-earth compounds as refractory materials has exceeded the available literature on the subject. While some basic properties, such as density and melting point, of th
Jan 1, 1962
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RI 3616 Biennial Report of Petroleum and Natural-Gas Division, Fiscal Years 1940 and 1941
By G. B. Shea, R. A. Cattell
This resume of the work of the Petroleum and Natural - Gas Division of the Bureau of Mines for the fiscal years 1940 and 1941 is the second of a series. of progress reports . It brings forward from th
Feb 1, 1942
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Measuring Physiological And Biochemical Changes In Work-Related Vibration - Introduction
By Danny A. Riley, James R. Sanger, Hani S. Matloub, Michael Agresti, David Rowe, Lin-Ling Zhang, Yuhui Yan, Paula Galaviz, Judith Marchant-Hanson, Ji-Geng Yan
Until now there has been controversy about which tests should be performed to diagnose early Hand-Arm Vibration Syndrome (HAVS). Initial screening questions, especially about tingling and numbness, ro
Jan 6, 2006
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RI 4520 Investigation Of Coal Deposits In South Central Alaska And The Kenai Peninsula
By Albert L. Toenges
The development of Alaska depends on the existence of an adequate fuel supply in the Territory. The need to investigate coal deposits was recognized as early as 1911, when the first investigations wer
Jan 1, 1949
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RI 3218 Volatilization of Impurities from Zinc Concentrates
By G. L. Oldwright, F. K. Shelton, W. E. Keck
"INTRODUCTION Zinc must be of high grade to satisfy the present demand. Even when the amount of premium paid is small, the purer metal as the buyers' preference. The following specifications for spelt
Jun 1, 1933
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RI 3911 Electrolytic Manganese in Low-Carbon Steel Tests at the Stanley Works, Bridgeport, Conn
By F. Sillers, R. T. C. Rasmussen
"INTRODUCTION This is the third report of investigations by the Bureau of Mines in cooperation with industry to establish the value of electrolytic manganese in the manufacture of ferrous and nonferro
Jul 1, 1945