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OFR-125-80 Study Of The Slate Mining Industry Of Vermont/New York
By W. I. Watson
The study considered all the institutional, resource reserve, technological, and economic factors relevant to the industry's present and future status, such as markets and marketing techniques, c
Jan 1, 1980
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RI 6962 Thermodynamic Properties Of Forsterite And Serpentine
By E. G. King
The Bureau of Mines made experimental determinations of the heats of formation of forsterite and chrysotile at 298.15° K. The heat capacities of two polymorphs of serpentine, chrysotile and antigorite
Jan 1, 1967
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IC 6627 Iron Oxide Pigments and Mortar Colors
By R. M. Santmyers
The pigments, whose colors are due primarily to iron exides and iron hydroxides, comprise a variety of yellow, brown, red, and sometimes black paint-coloring agents, both natural and artificially prep
May 1, 1932
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RI 3267 Bumps in Coal Mines of the Cumberland Field, Kentucky and Virginia - Causes and Remedy
By George S. Rice
"INTRODUCTION During the past 4 or 5 years the frequent occurrence of bumps in coal mines of the Cumberland field, in Harlan County, Ky., and Wise County, Va., has caused much apprehension among miner
Jan 1, 1935
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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 9189 - Relationship Between Horizontal Stresses and Geologic Anomalies in Two Coal Mines in Southern Illinois
By D. K. Ingram
In situ horizontal stresses were measured to determine the influences of geologic anomalies on the regional horizontal stress field in two coal mines in southern Illinois. Stress measurements were obt
Jan 1, 1988
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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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IC 6807 Petroleum Refineries, Including Cracking Plants, In The United States January 1, 1934 ? Introductory Summary
By G. R. Hopkins
According to reports received by the Bureau of Mines, Department of the Interior, as of January 1, 1934, there were 591 completed refineries in the United States, an increase of 86 ever the total repo
Jan 1, 1934
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RI 8948 - Analysis of Sampling Variance From Certain Platinum and Palladium Deposits in Alaska
By James C. Barker
The analytical variability encountered when sampling for platinum-group metals (PGM) was statistically evaluated during a 1983 study by the Bureau of Mines and the University of Alaska. Sampling proce
Jan 1, 1985
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OFR-13-82 Engineering Property Changes And Environmental Effects On Coal Mines Wastes Due To Slaking
Fresh coal refuse was sampled at 21 US mines. Five of the sites were drilled, sampled and tested more extensively. Field tests included Standard Penetration tests, and in-situ density determinations.
Jan 1, 1981
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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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OFR-126-80 Environmental Assessment Of Surface Shortwall Mining
By Ernest W. Hilton
The purpose of this investigation was to assess the environmental impact of the surface mining methods currently used in the steep-sloped areas of Central Appalachia: southern West Virginia, eastern K
Jan 1, 1979
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Brass-Furnace Practice In The United States. - Introduction.
By H. W. Gillett
This bulletin is issued by the Bureau of Mines as a contribution to the increase of safety and efficiency in the preparation and utilization of the mineral resources in the United States. Notable amon
Jan 1, 1916
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OFR-163-83 The Sixth WVU Conference On Coal Mine Electrotechnology - An Evaluation Of Problems Associated With 1000 Vac Longwall Mining Systems
By Paul M. Hall
In the last several years, the coal mining industry has made significant changes in the design of longwall mining systems to make them more productive. Some changes, such as increasing the length of t
Jan 1, 1982
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OFR-16-77 Proceedings - The Third WVU Conference on Coal Mine Electrotechnology - August 4-6, 1976
A compilation of papers presented at the Third WVU Conference on Coal Mine Electrotechnology in Morgantown, West Virginia, on August 4-6, 1976. Papers cover areas of electric power, electronic communi
Jan 1, 1976
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RI 4882 Volumetric Determination of Small Quantities of Uranium - With Special Reference to Errors Associated with Use of Jones Reductor (2b4914c2-e697-47ab-9da8-dccd8a6cadf8)
By Heber E. Peterson, Sill. Claude W.
"INTRODUCTION In the usual volumetric determination of uranium, the solution containing uranium is reduced in a Jones reductor, yielding a mixture of trivalent and tetravalent uranium; the trivalent u
Jun 1, 1952
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Highlights - Aluminum -
Reynolds Metals Company announced plans to increase its rate of production of primary aluminum by 17 thousand tons per year by the end of February. Other producers were expected to increase operating
Jan 1, 1976
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IC 7242 Synthetic Rubber - Its Production From Petroleum, Coal, And Other Materials ? Introduction
By W. C. Holliman
Commercial production of synthetic rubber in the United States became a reality in 1931 when E. I. duPont de Nemours, Inc., announced the manufacture of Duprene, a synthetic rubber made by polymerizin
Jan 1, 1943
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RI 7769 Geologic Factors Causing Roof Instability And Methane Emission Problems - The Lower Kittanning Coalbed, Cambria County, Pa.
By C. M. McCulloch
A geologic study of Mines 32 and 33 in Cambria County, Pa., was conducted as part of a methane control research program. Areas of high methane emission and roof instability are encountered which are r
Jan 1, 1973
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The Value Of U.S. Minerals In The Economy In 1975
The value of U.S. mineral raw material output reached a record $63.1 billion in 1975. This high exceeded the 1974 value of $55.2 billion by 14 percent. Among the three major mineral categories -fuels,
Jan 1, 1976