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OFR-127-80 Improved Light-Scattering Dust Monitor
By Byron S. Kutscher
This report summarizes the program to develop and construct an improved light-scattering dust monitor (ILSDM). This improved light-scattering dust monitor, which operates on the forward light scatteri
Jan 1, 1980
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RI 9418 - Canopy and Base Load Distribution on a Longwall Shield (14a010d7-73b6-499e-aefd-dc1cae4d5747)
By Thomas M. Barczak
This US. Bureau of Mines report examines the roof and floor contact pressure provided by the interaction of a shield with the surrounding strata. Controlled forces were applied to an 800-ton two-leg s
Jan 1, 2010
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RI 3402 Flow Characteristics, Composition, And Some Liquid-Phase Properties Of Hydrocarbon Fluids From A "Combination" Well ? Introduction (d90839d9-b952-4ca0-a039-5c82fb5b564c)
By C. K. Eilerts
Knowledge of the phase relations of the fluids that exist in the porous spaces of rocks constituting natural petroleum reservoirs and of the behavior of these fluids under various field conditions of
Jan 1, 1938
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IC 8488 Ash Utilization - Proceedings: Second Ash Utilization Symposium. Sponsored By National Coal Association, Edison Electric Inst., American Public Power Assn, National Ash Assn, And Bureau Of Mines, Pittsburgh, Pa., March 10-11, 1970
More than 400 academic, government, and industry representatives attended the second symposium on ash utilization and technology held in Pittsburgh, Pa., March 10-11, 1970. Sponsored by the National C
Jan 1, 1970
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Groupe d'objets provenant des Forges du St-Maurice l- étude métallographique et chimique
By A. Galibois, M. Fiset, T. Vo Van
"RÉSUMÉUn groupe de 22 objets prov enant des Forges du St-Maurice a été étudié de façon systématique par analyse chimique et examen métallographique afin de préciser leurs caractéristiques et d'e
Jan 1, 1984
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RI 3033 The Action Of Sulphur Dioxide On Manganese Oxides At Elevated Temperatures
By C. W. Davis
This paper is the second of a series of progress reports on a study, of the hydrometallurgy of manganese which is being conducted in an endeavor to make possible utilization of the large deposits of l
Jan 1, 1930
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RI 3033 The Action Of Sulphur Dioxide On Manganese Oxides At Elevated Temperatures ? Introduction
By C. W. Davis
This paper is the second of a series of progress reports on a study of the hydrometallurgy of manganese which is being, conducted in an endeavor to make possible utilization-of the large deposits of l
Jan 1, 1930
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Concentration Of Hematitic -Limonitic Iron Ores By High Intensity Permanent Magnetic Separator
By H. Demirel
This paper deals with concentration of hematitic-limonitic iron ores. The ore sample obtained from Karakuz (Turkey) contain:. about 40-46 I Fe. First, a low intensity magnetic separation process was
Jan 1, 1991
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The U.S. Cement Industry Operating In An Unfriendly Environment
Cement in 1975 indeed did operate in an unfriendly environment. World recession, escalating costs, fuel crises, reduced product demand . . . . all led to market conditions detrimental to industry prof
Jan 1, 1976
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Bulletin 34 Run-Of-Mine and Briquetted Coal
By Henry Kreisinger, WALTER T. RAY
In its investigation of more efficient methods for utilizing the coals and lignites in the United States, to the end that waste might be avoided, the value of low-grade coals increased, and the life o
Jan 1, 1911
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Precious-metal-bearing Volcanogenic Massive Sulfide Deposits, Campo Morado, Guerrero, Mexico
By Mark Rebagliati, John Payne, Jim Oliver
Abstract-The Campo Morado precious-metal-bearing, volcanogenic massive sulfide deposits occur in a lower Cretaceous, bimodal, calc-alkaline volcanic sequence in a major northerly trending belt in the
Jan 1, 1997
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Precious-metal-bearing Volcanogenic Massive Sulfide Deposits, Campo Morado, Guerrero,Mexico (63b48013-4318-466b-b2d9-966e31151f49)
By Mark Rebagliati, John Payne, Jim Oliver
The Campo Morado precious-metal-bearing, volcanogenic massive sul?de deposits occurin a lower Cretaceous, bimodal, calc-alkaline volcanic sequence in a major northerly trending belt inthe Guerrero Ter
Jan 1, 1997
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Bulletin 241 Coal Mine Fatalities - Accidents in the U.S., 1923
By William W. Adams
Reports for the calendar year 1923 that have been transmitted to the Bureau of Mines of the Department of the Interior by mine officials of the various coal-producing States show that accidents in and
Jan 1, 1923
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Government Actions And The Mineral Industry (258f39ae-c1a2-4cc1-9367-34f38d87beb5)
Duty on Lead Reduced. -On December 28, the President signed H.R. 5047 which reduces the duty on unwrought lead from 3.5% ad valorem to 3% ad valorem, with a floor level of 1.0625 cents per pound, effe
Jan 1, 1980
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RI 3057 Processes for Extracting Radium from Carnotite
By H. A. Doerner
"The following report is submitted, in compliance with the request made by the Honorable W. H. Sproule, Chairman of the Committee on Mines and Mining, to the Director of the United States Bureau of Mi
Dec 1, 1930
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Reflections on destress blasting for deep level hardrock mining: Key considerations for successful application of the techniques
By C. Yi, M. Onifade, B. Genc, S. Dineva, T. Zvarivadza, M. Khandelwal
Deep hardrock mines worldwide increasingly face rockbursts as mining depths increase. These events result from the accumulation and sudden release of stress, causing rockmass damage and posing major s
Jun 27, 2025
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IC 6631 Mining Laws of Denmark and Danish Possessions
By E. P. Youngman
This paper presents one of a series of digests of foreign mining legis- ation and court decisions that is being prepared in advance of a generel report elative to the rights of American citizens to ex
Jun 1, 1932
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The Relationship Between Porphyry Copper Deposits And Post-Orogenic Volcanism
By Paul Cameron Gilmour
Geologically, as distinct from economically, "porphyry copper (molybdenum, gold, silver, etc.) deposits" might be defined as large, disseminated and/or stock-work occurrences of copper-minerals, gener
Jan 1, 1972
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The Effect Of Velocity On The Dispersion Of Pollutants In A Hypothetical Arctic Open-Pit Mine
By A. Choudhury
Deep open-pit mines are becoming increasingly common in the highly mineralized arctic and sub-arctic regions. Air inversion is a frequent occurrence in these regions, and is exacerbated by the natural
Jan 1, 2012
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Disease And Illness In U. S. Mining, 1983–2001
By Edward A. Metz, R. Larry Grayson, Douglas F. Scott
We describe inconsistencies in disease and illness reporting in U.S. mining, identify under-reporting of disease and illness in U.S. mining, and summarize selected disease and illness in U.S. mining f