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1
Degasification of virgin Pittsburgh coalbed through a large borehole
“…United States. Bureau of Mines…”
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2
Degasification study from an air shaft in the Beckley coalbed
“…United States. Bureau of Mines…”
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3
Face ventilation measurement with sulfur hexafluoride (SF₆)
“…United States. Bureau of Mines…”
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4
Evaluation of alternative placement of longwall gob gas ventholes for optimum performance
“…United States. Bureau of Mines…”
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5
Effect of a surface borehole on longwall gob degasification (Pocahontas No. 3 Coalbed)
“…United States. Bureau of Mines…”
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6
Control of longwall gob gas with cross-measure boreholes (upper Kittanning coalbed)
“…United States. Bureau of Mines…”
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7
Bleeder system in virgin area in a Pittsburgh coalbed mine
“…United States. Bureau of Mines…”
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8
Methane drainage study using an underground pipeline, Marianna mine 58
“…United States. Bureau of Mines…”
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9
Methane control by isolation of a major coal panel Pittsburgh coalbed /
“…United States. Bureau of Mines…”
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10
Methane emission rate study in a deep Pocahontas No. 3 coalbed mine in conjunction with drilling degasification holes in the coalbed
“…United States. Bureau of Mines…”
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11
Using sulfur hexafluoride as a gaseous tracer to study ventilation systems in mines
“…United States. Bureau of Mines…”
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12
Tracer gas as an aid in mine ventilation analysis
“…United States. Bureau of Mines…”
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13
Removing methane (degasification) from the Pittsburgh coalbed in northern West Virginia
“…United States. Bureau of Mines…”
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Government Document Online Book -
14
Removing methane (degasification) from the Pocahontas no. 4 coalbed in southern West Virginia
“…United States. Bureau of Mines…”
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