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1/1/1992 - Training materials, Videos and multimediaA videotaped interview with a miner about a fall that occurred while he and another miner were attempting to bar down top just inby the last row of supports. An instructor's guide lets you use the video as part of an effective training session.
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1/1/1992 - Training materials, Videos and multimediaA videotaped interview with Dave about the experience of recovering the body of a friend who was killed by a roof fall while under unsupported top.
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1/1/1992 - Reports of InvestigationsThis report presents a Bureau of Mines study to identify the causes of self-heating events beneath the floor of a deep underground coal mine. The combined results led to the conclusion that pyrite oxidation was the prime cause of the heatings.
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7/1/1990 - Conference papersAn ideal fire warning alarm system for underground mines would be low cost, convenient, fast, reliable, and able to warn all underground workers. The U.S. Bureau of Mine devised a one way communication system employs a large loop antenna and transmitter...
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1/1/1989 - Reports of InvestigationsThe U.S. Bureau of Mines used a contact drilling strategy with short-collared assemblies in order to rotary drill long horizontal methane drainage holes in the Beckley coalbed near Glen Daniel, West Virginia. By decreasing the thrust and increasing the ...
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1/1/1986 - Information CircularsThis report presents a data base of gas content data. The data are presented in tabular form, by coalbed name and state. The components of the total gas content (lost, desorbed, and residual gas) are given. Location (state and county), sample depth, coa...
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1/1/1985 - Reports of InvestigationsInvestigation of coal-mine-type short-delay electric detonators to determine the delay accuracy and the probability of overlap between adjacent delay periods.
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1/1/1985 - Reports of InvestigationsCriteria were documented for the recognition and prediction of discontinuities in advance of mining.
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1/1/1984 - Information CircularsSince 1969, the Bureau of Mines has sponsored numerous programs aimed at improving methods of underground communication. This manual brings together relevant data from all previous reports, studies, and other sources, and presents these data in such a w...
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1/1/1984 - Conference papersTheoretical and experimental research sponsored by the U.S. Bureau of Mines shows that medium frequency (MF) electromagnetic (EM) signals propagate great distances in an underground environment such as a tunnel or mine. This propagation is enhanced by d...
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Content source: National Institute for Occupational Safety and Health, Mining Program