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- Information Circulars
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Results 101 - 110 of 150
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1/1/1995 - Information CircularsAn analysis of 164 underground coal mine fire incidents occurring in the United States during the 15 years from 1978 through 1992.
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1/1/1995 - Information CircularsTo help evaluate the usefulness of the natural gamma radiation (NGR) technique for the coal interface detection (CID) project, the U.S. Bureau of Mines (USBM) collected data from various mining companies conducting underground and surface operations.
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1/1/1994 - Information CircularsThe U.S. Bureau of Mines conducted a worldwide literature review of bleederless ventilation practices to evaluate their use as a spontaneous combustion control measure in U.S. coal mines. This report describes the types of ventilation systems used throu...
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1/1/1992 - Information CircularsAn investigation of the combustion products of typical materials found in underground mines. The results are combined with previous analyses to estimate relative toxicities, product levels and detectability of smoldering mine combustibles.
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1/1/1992 - Information CircularsA U.S. Bureau of Mines investigation of longwall panel layouts to maximize coal recovery and minimize interactive problems in multiple-seam operations.
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1/1/1992 - Information CircularsA U.S. Bureau of Mines study on the potential availability of copper from 204 mines and deposits in market economy countries.
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1/1/1992 - Information CircularsMULSIM/NL is a U.S. Bureau of Mines boundary-element-method program for calculating stresses and displacements in coal mines or thin, tabular metalliferous veins. This manual gives detailed operating instructions for MULSIM/NL and illustrates its use w...
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1/1/1992 - Information CircularsThe program described in this U.S. Bureau of Mines report is part of the MULSIM/NL package, which features the actual BEM program described herein, as well as a preprocessor program called MULPRE/NL and a plotting postprocessor program called MULPLT/NL.
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1/1/1992 - Information CircularsAn report on the evaluation of smoke detectors placed in conveyor belt entries of underground coal mines. Recommendations for performance standards, sensitivity tests, detector classification and maintenance are also presented.
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1/1/1992 - Information CircularsReviews the mechanics of rib failure and the relationship of coal mine geology and pillar constraint to rib instability. Strategies for choosing an effective method of rib support are considered and various rib support methods are discussed.
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Content source: National Institute for Occupational Safety and Health, Mining Program