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- Geologic conditions and events:
- Gas emissions
- Document types:
- Information Circulars
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Results 1 - 8 of 8
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4/1/2008 - Information CircularsThis report presents a historical framework detailing the impact of geologic features on excess gas emissions and resultant mine explosions.
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6/1/2006 - Book chapters, Information CircularsThis chapter summarizes how certain geologic features may be associated with unexpected increases in gas emissions during coal mining. These unexpected emissions have the potential to create explosive conditions in the underground workplace. Also discu...
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1/1/1987 - Information CircularsOutbursts are sudden and violent releases of gas and coal that result from a complex function of geology, stress regime, and gas pressure and content. The Bureau of Mines has reviewed methods for prediction and mitigation of such outbursts in use worldw...
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1/1/1984 - Information CircularsA tabulation of methane emissions during 1980 for all United States coal mines with emissions greater than 0.1 MMcfd. The report also compares records of 1975 and 1980 and describes relationships between emissions in 1980 and the Bureau's coalbed gas co...
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1/1/1982 - Information CircularsThe objective of this paper is to provide information on specific geologic factors that should be considered prior to, during, and after the drilling of coalbed gas drainage boreholes. Many of the commonsense considerations that have been learned throug...
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1/1/1977 - Information CircularsThis Bureau of Mines report tabulates methane emissions from U.S. Bituminous coal mines with daily emission rates of at least 100,000 cfd according to states, counties, and coalbeds. Most of the methane emitted is from mines in the Appalachian States. T...
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1/1/1974 - Information CircularsThis Bureau of Mines survey of methane emissions indicates that total daily emissions have declined from 227 mm ft3 in 1971 to 214.7 mm ft3 in 1973. The highest average daily emissions in million cubic feet per day are detailed by state.
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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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Content source: National Institute for Occupational Safety and Health, Mining Program