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1
Degasification of the Mary Lee coalbed near Oak Grove, Jefferson County, Ala., by vertical borehole in advance of mining
“…United States. Bureau of Mines…”
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2
Degasification of the Mary Lee coalbed, Brookwood, Ala.
“…United States. Bureau of Mines…”
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3
Degasification of virgin Pittsburgh coalbed through a large borehole
“…United States. Bureau of Mines…”
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4
Degasification study from an air shaft in the Beckley coalbed
“…United States. Bureau of Mines…”
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5
A fail-safe control system for a mine methane pipeline
“…United States. Bureau of Mines…”
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6
Comparisons between cross-measure boreholes and surface gob holes
“…United States. Bureau of Mines…”
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7
Drilling a horizontal coalbed methane drainage system from a directional surface borehole
“…United States. Bureau of Mines…”
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8
Measuring formation pressures and the degree of gas drainage in a large coalbed gas drainage field
“…United States. Bureau of Mines…”
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9
Methane drainage study using an underground pipeline, Marianna mine 58
“…United States. Bureau of Mines…”
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10
Methane control on longwalls with cross-measure boreholes (Lower Kittanning coalbed)
“…United States. Bureau of Mines…”
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11
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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12
Use of a sodium silicate gel grout for plugging horizontal methane-drainage holes
“…United States. Bureau of Mines…”
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13
Use of surface joint and photolinear data for predicting subsurface coal cleat orientation
“…United States. Bureau of Mines…”
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14
Underground gob gas drainage during longwall mining
“…United States. Bureau of Mines…”
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15
Three coal mine gob degasification studies using surface foreholes and a bleeder system
“…United States. Bureau of Mines…”
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16
Rotary drilling holes in coalbeds for degasification
“…United States. Bureau of Mines…”
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17
Removing methane (degasification) from the Pittsburgh coalbed in northern West Virginia
“…United States. Bureau of Mines…”
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18
Removing methane (degasification) from the Pocahontas no. 4 coalbed in southern West Virginia
“…United States. Bureau of Mines…”
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