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Results 21 - 25 of 25
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8/1/1983 - Open File ReportsLaboratory and field tests of vane axial main mine fans in the 7- to 9-ft diameter size range were conducted to establish forward and reverse performance characteristics under controlled conditions and at typical mine installations.
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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 - Reports of InvestigationsA sorption apparatus for measuring the equilibrium sorption isotherm and the rate of diffusion of methane from fine-sized coal was designed and constructed. Preliminary work that used Pittsburgh and Pocahontas No. 3 Coal shows that the diffusion coeffic...
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3/1/1969 - Technical Progress ReportsThe Bureau of Mines conducted drilling studies in the Pocahontas No. 3, the Pittsburgh, and a western coalbed to establish the gas migration characteristics for each.
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2/1/1995 - Conference papersThis project investigates the behavior of blast waves from the detonation of high explosives in an underground mine.
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Content source: National Institute for Occupational Safety and Health, Mining Program