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RI 3909 Concentration of Bauxite for Milling in the 50-Ton Bureau of Mines Pilot Plant. Bauxite, Ark.
By S. M. Runke
"During the past three years the Bureau of Mines has carried on an extensive research program at the Rolla Laboratory for the beneficiation of low-grade Arkansas baixites by ore dressing methods. As a
Aug 1, 1946
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RI 7069 Parameters Affecting Reduction-Induration Of Unfired Magnetite Pellets
By R. B. Schluter
Magnetite pellets were simultaneously reduced and indurated on a laboratory scale in order to determine the effects of temperature, induration time, degree of metallization, and sulfur content upon th
Jan 1, 1968
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OFR-42(1)-74 Protection And Troubleshooting Of Coalmine Electrical Cables - Shuttle Car Reel Test Unit - I. Introduction
Severe whipping of shuttle car trailing cables occurs when the car stops suddenly or reverses direction. This causes cable damage, and can seriously injure personnel near the cable. FMC has contra
Jan 1, 1972
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RI 3500 Progress Reports - Metallurgical Division ? 38. Electrometallurgical Investigations ? Introduction
By J. Koster
[Boron is an element whose metallurgical possibilities never have been investigated thoroughly, probably because of the difficulties experienced in the preparation of elemental boron and its intermeta
Jan 1, 1940
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IC 9316 The History And Future Of Longwall Mining In The United States
By Thomas M. Barczak
This U.S. Bureau of Mines report chronicles the historical development of longwall mining in the United States and speculates on future developments to the turn of the century. The involvement and con
Jan 1, 1992
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IC 8126 Blasting Stumps In Coal Mines ? Introduction
By R. W. Stahl
The use of continuous mining machines has greatly minimized the necessity for blasting in coal mines, even during pillar recovery; however, explosives are still used to blast stumps. The use of improp
Jan 1, 1962
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OFR-49-85 Development Of The Hvdrotransport Boost Pump
By Leslie S. Rubin
A ventilated helical boost pump was developed that can handle varying flow rates and/or solids concentrations while operating at a single rotational speed and without computer assisted feedback contro
Jan 1, 1984
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OFR-47(4)-83 Ecological Studies On The Revegetation Process Of Surface Coal Mined Areas In North Dakota - 4. Soil And Vegetation Development On Topsoiled Areas
By Louis R. Iverson
Patterns of species colonization, biochemical interaction among species, and competitive phenomena were studied in four reclaimed areas in western North Dakota ranging in age from one to four years af
Jan 1, 1982
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RI 6035 Hydrogen As An Oxidation Retardant In Gas-Cooled Systems ? Summary
By Robert F. Stewart
The oxidation of structural materials at high temperatures in gas-cooled systems can be greatly retarded by the addition of small amounts of hydrogen to the inert coolant. In experimental equipment fo
Jan 1, 1962
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IC 8408 Impact Of Petroleum Development In The Gulf Of Mexico
By L. K. Weaver
Bureau of Mines investigated the progressive impact that petroleum (crude oil and condensate) operations in the Gulf of Mexico have had on onshore operations and the expected effect of increasing acti
Jan 1, 1969
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RI 6065 Factors Influencing The Design Of Hydraulic Backfill Systems (In Two Parts) 1. Friction-Head Losses Of Sand Slurries During Pipeline Transport ? Summary
By William R. Wayment
The objective of this investigation was to obtain data on friction-head losses of sand slurries during their transport in pipelines. The data ultimately will be used in designing hydraulic transport s
Jan 1, 1962
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OFR-39(5)-82 Experiments On Personal Equipment For Low Seam Coal Miners: IV. Incorporating Coiled Cord Into Cap Lamp Battery Cords (f9ff7a4b-ad02-4b4a-a276-651d10f5a02f)
By Tyler Blake
This report describes a study designed to evaluate a pro-posed modification in the cap lamp battery cord intented to reduce the incidence of snagging and catching of the cord. A three phase evaluation
Jan 1, 1980
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IC 8801 Mine Power Systems Research (In Four Parts) 3. Circuit Protection
This Bureau of Mines report describes research on methods of assuring the continued safety of mine electrical power distribution circuits through reliability and quality assessment of the protective d
Jan 1, 1979
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RI 8107 Coal Mine Combustion Products: Conveyor Belts
By Arthur M. Hartstein
The Federal Bureau of Mines, under a contract with Ultrasystems, Inc., investigated the thermal oxidative degradation characteristics of conveyor belts used in underground mines. This included the det
Jan 1, 1976
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RI 8563 Recovery of Byproduct Heavy Minerals From Sand and Gravel Operations in Oregon and Washington
By G. M. Martinez
The Bureau of Mines has investigated methods for the recovery of byproduct heavy minerals from sand and gravel operations in Oregon and Washington. These heavy minerals are not currently recovered exc
Jan 1, 1981
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RI 2661 Exhaust Gases From Engines Using Ethyl Gasoline
By B. G. H. Thomas, W. P. Yant, A. C. Fieldner, R. R. Sayers, W. J. McConnell
"One of the outstanding problems confronting automotive engineers in attempting to construct motors of greater economy is that of eliminating the ""knock"" from the operation of the engine. Recent inv
Dec 1, 1924
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RI 5780 Correlation Of Fischer-Schrader Assay And BM-AGA Carbonization Yields ? Introduction
By J. G. Walters
In 1928, the Coal Carbonization Section of the Federal Bureau of Mines, in cooperation with the American Gas Association, began a survey of the carbonizing properties of American coals. A standard tes
Jan 1, 1961
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OFR-29-75 A Feasibility Study On The Use Of Foam To Reduce Respirable Dust On A Joy 10cm Continuous Miner
By T. R. Achenbach
1. This, the final report to the U. S. Bureau of Mines on the program with the subject title, presents the data obtained from June 29, 1973, to April 20, 1974. 2. Operating in the Illinois #6 coal
Jan 1, 1974
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RI 3504 Phenomena Observed During The Prolonged Oxidation Of Anthracite ? Introduction (256195ed-17e4-48b5-8c89-d55f9b441c08)
By G. S. Scott
In the course of the Bureau of Mines investigation relative to the causes, behavior, and control f anthracite-mine fires, attention was directed toward the correlation between the temperature of oxida
Jan 1, 1940
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OFR-2-82 Demonstration Of Coal Mine Illumination Systems
By Anthony D. Szpak
The purpose of this program was to demonstrate the feasibility of Illuminating various types of underground coal mining machinery as required by the Federal Coal Mine Illumination Standards Part 75.17
Jan 1, 1981