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Spatial trends in rock strength – can they be determined from coreholes?
By Deno Pappas, Chrisropher Mark, John Rusnak, Linda McWilliams
Mine planning for a new reserve is based on information obtained from exploratory coreholes. A critical component of an exploration program is the geotechnical evaluation. Poor assumptions about roo
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IC 8861 Alumina Availability - Domestic - A Minerals Availability System Appraisal
By Gary R. Peterson
In order to determine the potential availability of alumina to feed U.S. aluminum smellers, the Bureau of Mines evaluated 39 domestic mines and deposits of bauxite, alunite, and high-alumina clays and
Jan 1, 1981
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RI 8776 Evaluation of Radium and Toxic Element Leaching Characteristics of Florida Phosphogypsum Stockpiles
By Alexander May
The Bureau of Mines conducted studies to determine if phosphogypsum, a waste material from the processing of phosphate rock, contains hazardous toxic materials as defined by the Environmental Protecti
Jan 1, 1983
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OFR-24(5)-84 Mining And Rock Mechanics Research In Oil Shale And Nahcolite, Horse Draw Shaft, Colorado - Appendix Volume A-3 Drawing Index
During the period 1979 thru 1982. Multi Mineral Corporation conducted a mining research program at the United StAtes Department of the Interior's Bureau vi Mines Oil Shale Mining Environmental Re
Jan 1, 1983
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RI 8777 Correlation of LANDSAT and Air Photo Linears With Roof Control Problems and Geologic Features
By Jacqueline H. Jansky
The Mine Safety and Health Administration (MSHA), U.S. Department of Labor, did a linear analysis for a new underground coal mine in Grant County, WV, through the interpretation of LANDSAT imagery and
Jan 1, 1983
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IC 7043 Reconnaissance Of Mining Districts In Lander County, Nevada ? Introduction
By William O. Vanderburg
This report 3/gives the results of a reconnaissance of the mining districts in Lander County, Nev., made from March 29 to April 20 and from May 9 to May 21, 1938, during which virtually all of the min
Jan 1, 1939
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RI 7622 Continuous Gaseous Direct Reduction Of Low-Grade Iron Ores In A Fluid-Bed Reactor
By E. G. Davis
The Bureau of Mines investigated gaseous direct reduction of low-grade iron ore concentrates in a continuous fluid-bed reactor. These studies were made in a 4-inch diameter fluid-bed reactor using hyd
Jan 1, 1972
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RI 8095 Cutting Experiments Using a Rotating Water Jet in a Borehole
By George A. Savanick
An experimental hydraulic jetting device intended to operate in a 16-in-diam borehole was designed, fabricated, and used to cut coal and simulated coal samples. This device consisted of two 0.107-in-d
Jan 1, 1975
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Injury Analysis Of Pennsylvania Small Surface Coal Mines
By Robert F. Randolph
Introduction This paper is a descriptive analysis of injuries and fatalities at small surface bituminous coalmining companies in Pennsylvania. The purpose of analyzing a specific industry sector a
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RI 9279 Yielding Steel Posts
By J. P. Dunford
This U.S. Bureau of Mines report describes the development of a yielding steel post for underground mine support. The report covers concept development, laboratory tests, modifications, and field eval
Jan 1, 1989
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The Mineral Industry Of Other Central African Countries - Cameroon (dd969860-d4b2-49fd-beba-0be035ebafc3)
By Thomas O. Glover
The mining industry of Cameroon continued to be dominated by crude petroleum. Crude petroleum production has become the most important facet of Cameroon's economic development. Oil production was
Jan 1, 1985
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OFR-154-81 Develop Grounding Practices For Metal/Non-Metal Mines
By Wils L. Cooley
This report analyzes electrical accident data in the metal/non-metal mining industry. Accidents are categorized to determine their root causes. Special attention is given to accidents associated with
Jan 1, 1981
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Other Metals ? Arsenic (c5d48a98-c6b3-477a-881a-fac7713383e9)
By Neldon L. Jensen
Although ASARCO Incorporated, the only domestic producer, had terminated copper smelting operations and associated recovery of byproduct arsenic trioxide at Tacoma, WA, in 1985, it shipped small quant
Jan 1, 1988
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RI 7550 Noise In Underground Coal Mines
By J. A. Lamonica
The Bureau of Mines conducted an environmental noise survey to determine the noise levels to which underground coal mine employees are exposed, to evaluate noise survey techniques and equipment, and t
Jan 1, 1971
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RI 7079 Recovery Of Alumina And Iron From Pacific Northwest Bauxites By The Pedersen Process
By Oliver C. Fursman
The Bureau of Mines undertook this investigation in order to determine the feasibility of producing commercially acceptable alumina and iron by application of the Pedersen process to high-silica, high
Jan 1, 1968
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IC 7012 Milling Methods And Costs Of The Cardinal Gold Mining Co., Bishop Creek, Calif. ? Introduction
By Walter B. Lenhart
This paper is one of a series on milling methods and costs being. published by the Bureau of Mines. The milling practices and special problems relating to grinding, tailings disposal, and choice of a
Jan 1, 1938
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IC 8106 Research And Technologic Work On Explosives, Explosions, And Flames: Fiscal Year 1960 ? Introduction
By Ruth F. Brinkley
This circular describes the activities and publications of the Bureau of Mines, Explosives Research Laboratory4 for the fiscal year 1960 (July 1, 1959 -June 30, 1960). Part 1 describes briefly the
Jan 1, 1962
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A Comparison Of Fatigue Failure Responses Of Old Versus Middle-Aged Lumbar Motion Segments In Simulated Flexed Lifting
By Sean Gallagher, William S. Marras, Alan S. Litsky, Velimir Matkovic, Deborah Burr, John Landoll
Study Design. Survival analysis techniques were used to compare the fatigue failure responses of elderly motion segments to a middle-aged sample. Objectives. To compare fatigue life of a middle-aged
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OFR-152-81 Production Engineering, Development, And Demonstration Of The Draft Power Sensor - Volume I
By H. Stanley Benson
This report is an account of research conducted to improve the performance of and then further field test Draft Power Sensor (DPS) equipment, the use of which enables a bulldozer operator to optimize
Jan 1, 1980
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Contributions To The Data On Theoretical Metallurgy - VI. A Revision Of The Entropies Of Inorganic Substances-1935 - Introduction
By K. K. Kelley
The entropy values at 298.1° K. for the elements and inorganic compounds, on which sufficient data were available for calculation in 1931, were discussed in a previous publication (96).3 Since that ti
Jan 1, 1936