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Results 71 - 76 of 76
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7/1/1973 - Contract reportsA prototype electromagnetic (em) location system consisting of six miniature transmitters, six miniature receivers, and one multichannel receiver was developed by Westinghouse Georesearch Laboratory and is described in this report.
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1/1/1973 - Reports of InvestigationsA geologic study of Mines 32 and 33 in Cambria County, Pennsylvania, was conducted as part of a methane control research program.
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1/1/1973 - Reports of InvestigationsThe Bureau of Mines is in the process of degasifying a virgin area in northern West Virginia from the base of an 839-foot-deep vertical borehole.
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1/1/1972 - Information CircularsThis survey was conducted to determine the magnitude of the methane emission and control problem in U.S. bituminous coal mines. The resultant data indicate that the emission rate for any given coalbed depends primarily on the coal production rate and on...
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1/1/1963 - Reports of InvestigationsTests were conducted in the Pocahontas No. 4 coalbed in southern West Virginia to determine if successful degasification techniques, developed during an earlier study in the Pittsburgh coalbed, would effectively remove methane from those usually more ga...
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Major Disasters at Metal and Nonmetal Mines and Quarries in the United States (Excluding Coal Mines)4/1/1949 - Information CircularsA 1949 U.S. Bureau of Mines Information Circular describing major U.S. metal/nonmetal mining disasters.
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Content source: National Institute for Occupational Safety and Health, Mining Program