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The Geological Strength Index (GSI): A Characterization Tool For Assessing Engineering Properties For Rock Masses
By Paul G. Marinos, Vassilis Marinos, Evert Hoek
The Geological Strength Index (GSI) is a system of rock mass characterization that has been developed in engineering rock mechanics to meet the need for reliable input data related to rock mass proper
Jan 5, 2007
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Subject Index to Bureau of Mines Publications from July 1, 1990 to January 1, 1960 - Subject Index M-P
"M bed, Matanuska valley, Alaska, coal carbonizingproperties B 510M spectral lines, low-energy, study RI 5538Mab shaft, Leadvile district, Colo., investigation RI .1518Maberry process, for aluminum c
Jan 1, 1960
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IC 7430 Low-Temperature Carbonization of Coal in Japan
By William T. Reid
Low-temperature carbonization of coal in Japan served as an important source of liquid fuels during the war. Six plants operating in Japan Proper produced 203,069 KL (53.7 million gallons) of liquid f
Feb 1, 1948
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IC 7281 The Burning Rate Of Fuse - Introduction
By D. Harrington
Educational campaigns conducted by the manufacturers of explosives, the Bureau of Mines, mining companies, and safety organizations have contributed greatly in reducing accidents caused by explosives
Jan 1, 1944
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RI 3207 Study of Falls of Roof and Coal, Rock Springs District, Sweetwater County WY
By H. Tomlinson
"INTR0DUCTIONThis publication is a third of a series devoted to falls of roof and coal in coal mines of the Western States. It gives the results of examinations of the mines of the Rock Springs coal D
May 1, 1933
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IC 6155 Clay ? Foreword
By Paul M. Tyler
The technology of clay and the manufacture of ceramic products therefrom, and also the clay resources of most of the individual States, are already covered by a voluminous literature. The present resu
Jan 1, 1929
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OFR-39(1)-82 Use Of Personal Equipment In Low Coal: A Review Of The Personal Equipment Literature
By Mark S. Sanders
This report is a review and synthesis of the published literature dealing with personal equipment items used by low seam coal miners. This report reviews the following items of equipment: headgear, ou
Jan 1, 1978
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World Gold - A Minerals Availability Appraisal - Executive Summary - The World Gold Industry - An Introduction
More gold is being produced now than ever before in recorded history. All over the world huge quantities of ore are being mined and processed, thanks to historically high prices for gold and the use o
Jan 1, 1994
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IC 8277 Bureau Of Mines Research And Technologic Work On Coal, 1964 -Introduction (68f52494-2399-4f08-a541-6712e03c5855)
Coal research and related activities in 1964 by the Bureau of Mines resulted in many advances in the production, preparation, and utilization of this valuable natural resource. Mining research during
Jan 1, 1965
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RI 3994 Pilot-Plant Investigations Production of Sponge Iron with Producer Gas
By R. G. Knickerbocker, T. E. Evans, D. R. Torgeson
"INTRODUCTION Sponge iron is a product resulting from the reduction of an iron oxide at such a low temperature that fusion does not occur, and the reduced particles retain substantially the same shape
Dec 1, 1946
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IC 7347 Utilization Of Natural Gas For Chemical Products
By Harold M. Smith
Among the more important raw materials now utilized for the commercial production of synthetic organic chemicals is natural 'gas. Natural gas has been used as a fuel and source of energy almost f
Jan 1, 1947
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Minor Metals - Cesium And Rubidium (096d63f4-744b-4c6a-8d0f-985747cf8613)
By Charles T. Baroch
RESEARCH strengthened the position of cesium as the preferred material (commonly but erroneously called "fuel") for ionic propulsion engines. Its use as an element of the plasma thermocouple for gener
Jan 1, 1960
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RI 3227 Trade Trends In The Lime Industry ? Introduction
By Paul Hatmaker
Lime was a highly useful commodity thousands of years before the simple chemistry of its manufacturing process was known. The employment of lime for agriculture, building, and even certain essentially
Jan 1, 1934
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The Mineral Industry Of Other West African Countries - Benin (e8cbf5f1-567f-42dd-9853-7bc37da6ef95)
By George A. Morgan
There was little change in the mineral industry of Benin in 1986, as the economy remained in the grip of a regional recession exacerbated by failing oil prices, which nullified much of the income from
Jan 1, 1988
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Vibration Control On Hand-Held Industrial Power Tools - Introduction
By Lars Skogsberg
Work with hand-held power tools can be found in most industries all over the world. This type of work exposes the operators to different kind of loads like gripping-forces, feed-forces, exposure to vi
Jan 6, 2006
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Bulletin 231 Investigation of Toxic Gases from Mexican and other High Sulphur Petroleums and Products
By N. A. C. Smith, A. C. Fieldner, R. R. Sayers
Gases and vapors given off by petroleum and its products have long been recognized as somewhat injurious, when inhaled in high enough concentrations. The petroleum industry has recognized these effect
Jan 1, 1925
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Bulletin 168 Recovery of Zinc From Low Grade and Complex Ores
By Oliver C. Ralston, Dorsey A. Lyon
Volatilization in retorts has been, until recently, the only commercial process of producing spelter, hence the zinc mine operators have had to meet the terms of the zinc smelters in regard to the fol
Jan 1, 1919
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Effects Of Posture On Dynamic Back Loading During A Cable Lifting Task
By Kermit G. Davis, Sean Gallagher, William S. Marras, Kimberly Kovacs
This study evaluated spinal loads associated with lifting and hanging heavy mining cable in a variety of postures. This electrical cable can weigh up to 10 kg per metre and is often lifted in restrict
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OFR-117-81 Application Of A Hydraulic Borehole Mining Apparatus To The Remote Extraction Of Coal
By J. B. Cheung
The results of a program to demonstrate the technical feasibility of hydraulic borehole coal mining are presented in this report. The hydraulic borehole method of coal mining involves inserting a hydr
Jan 1, 1976
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OFR-8-81 Feasibility Of Control System Automation For A Drum Head Continuous Mining Machine
By John E. Lambert
Automatic control of drum head continuous mining machines was investigated as a means of reducing respirable dust generated and operator variabitity. Literature survey, manufacturer interviews and min
Jan 1, 1979