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OFR-25-75 Analytical Investigations Of Electromagnetic Location Schemes Relevant To Mine Rescue - Part I - Executive Summary (0a560091-e5ee-4fd2-bacd-1488cc050f0d)
By David A. Hill
This volume contains a summary of the results of past analyses on U.S. Bureau of Mines Contract No. 80122061 which are relevant to electromagnetic location in mine rescue situations. The analytical re
Jan 1, 1974
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RI 5499 Zirconium-Hafnium Separation- Summary
By William A. Stickney
The zirconium-hafnium separation plant at Albany, Oreg., was the result of a chain of events that started with studies by A. R. Kaufmann at the Massachusetts Institute of Technology. Variations in the
Jan 1, 1959
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RI 7374 Adaptation Of A Slow-Speed Data Acquisition System To Record Multiple Time-Related Signals
By R. Newman
An inexpensive slow-speed data acquisition system has been adapted to digitally record multiple parameters simultaneously at intervals of 15 seconds. The system was built for use with standard soils t
Jan 1, 1970
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RI 7070 New England Beryllium Investigations
By William R. Barton
Sampling to determine development potential of beryllium deposits was conducted at 31 New England localities. A total of 54 additional areas where the geochemical environment appeared favorable were s
Jan 1, 1968
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RI 3550 Cooperative Fuel Research Motor-Gasoline Survey, Summer 1940 ? Introduction
By E. C. Lane
[This is the tenth in a series of retorts on properties of commercial motor fuels, made in accordance with a cooperative agreement between the Cooperative Fuel Research (C.F.R.) Committee e end the Bu
Jan 1, 1941
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Behavior of Nitrogen Oxides in the Product Gases from Explosive Detonations
By Richard J. Mainiero, Michael J. Sapko, James H. Rowland III, Marcia L. Harris
All explosive materials produce a cloud of reaction products, the most toxic of which is nitrogen dioxide (NO2). In the study reported here, 4.5-kg (10-lb) charges of blasting agent confined in either
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IC 8057 A Method Of Analyzing Demand For Mineral Commodities - A Case Study Of Salt ? Introduction
By Richard S. Watt
The Bureau of Mines is often called upon to analyze the demand for various minerals and fuels and to make projections of the future demand. Because minerals and fuels are raw materials and because the
Jan 1, 1962
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RI 7882 Tunneling Machine Research - Size Distribution of Rock Fragments Produced by Rolling Disk Cutters
By Parviz F. Rad
The Bureau of Mines used a linear cutting apparatus equipped with a 7-inch disk cutter to cut grooves in marble, limestone, granite, and quartzite under a normal force of 7,000 lb. The size distributi
Jan 1, 1974
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RI 2393 Production of Alumina from Clay Tests...Miguent Process
By Clyde E. Eilliams
In recent ye.ars much intere,t has been centered on the possibility of producing alumina from clq, a.nd proposed methods tor the recove:r,v of alumina are appearing constantly in parent lit,erature,
Aug 1, 1922
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RI 8260 Effects of Hydraulic Stimulation on Coalbeds and Associated Strata (db096436-ec70-4f3f-a48a-5fe601799618)
By Curtis H. Elder
In studies conducted by the Bureau of Mines, two test areas were hydraulically stimulated and exposed by mining: One in the Pittsburgh coalbed at the Vesta No. 5 mine, Washington County, Pa.; and one
Jan 1, 1977
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OFR-99-78 Design, Development And Field Test Results Of Overturn Stability Indicators And Obstacle Detectors For Front End Loaders
By Gilbert A. Wray
This report presents the results of a study of the overturning Stability of Front End Loaders and the development of an Obstacle Detector to warn of Obstacles in the blind regions of the vehicle. The
Jan 1, 1977
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OFR-59-82 Design Of A Portable Gas Analyzer For Monitoring During Mine Fires
By Clayton J. Bossart
The design and fabrication of an engineering model and three prototypes of a portable gas analyzer and sapling system is herein described. This design effort has provided a battery operated system whi
Jan 1, 1978
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IC 6608 Methods And Costs Of Quarrying, Crushing And Grinding Limestone At The Plant Of The Southwestern Portland Cement Co., El Paso, Texas ? Introduction
By Robert T. Mann
This paper is one of a series being prepared for and published by the United States Bureau of Mines on the quarrying, crushing, and grinding of limestone for cement manufacture. These papers are desig
Jan 1, 1933
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RI 3407 Earth Vibrations Caused By Mine Blasting - Progress Report 2 ? Introduction (8d9dbf31-1f51-47f4-8797-6b6bb5aca787)
By J. R. Thoenen
In Progress Rerort 1,4/ a number of facto were demonstrated and conclusions drawn from experimental tests and records made during commercial blasting operations at a number of quarries. For example, t
Jan 1, 1938
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IC 7790 Natural-Gasoline And Cycling Plants In The United States, January 1,1956 ? Summary
By I. F. Avery
The productive capacity of natural gasoline and cycling plants in the United States on January 1, 1956, was 46.4 million gallons per day, according to the Bureau of Mines r biennial survey. This repre
Jan 1, 1957
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Occupational Illnesses
Occupational illnesses are more difficult to identify than on-the-job injuries. Many illnesses related to occupational exposures may not be diagnosed until years after exposure; by that time, exposed
Jan 5, 2000
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RI 8005 Methane Ignition by Frictional Impact Between Aluminum Alloys and Rusted Steel
By D. H. Desy
The Bureau of Mines has conducted research on the ignition of methane-air mixtures by sparks caused by frictional impact of aluminum alloys on rusted steel at typical coal mine fan speeds. The objecti
Jan 1, 1975
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OFR-52-80 Modeling Of The Leaching Of Oxide Copper Ores
By Dong G. Chae
A model for the leaching of oxide ores is developed and II correlated with laboratory tests for percolation leaching of copper oxide are. Using the model, recovery of metal values and lixiviant concen
Jan 1, 1979
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OFR-174-82 Impact Of Surface Mining On Soil Compaction In The Midwestern U.S.A.
By Steve C. Albrecht
The objective of this study is "to assess the impact of surface mining on soil compaction in the Midwest". The study revolves around a unique field sampling program targeted at four mine sites utilizi
Jan 1, 1982
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IC 8603 Technologic And Related Trends In The Mineral Industries, 1972
This report, the third in an annual series, outlines recent trends and developments in the minerals industry. Discussed are new methods, equipment, techniques, and systems used to more, effectively ex
Jan 1, 1973