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1
Overlap probability for short-period-delay detonators used in underground coal mining
“…United States. Bureau of Mines…”
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2
Methods of determining the orientations of bedrock fracture systems in southwestern Pennsylvania and northern West Virginia
“…United States. Bureau of Mines…”
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3
Vertical magnetic noise in the voice frequency band within and above coal mines
“…United States. Bureau of Mines…”
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4
Effective hazard recognition training using a latent-image, three-dimensional slide simulation exercise
“…United States. Bureau of Mines…”
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5
Horizontal trajectories of rotary-drilled holes
“…United States. Bureau of Mines…”
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6
Geologic investigations of underground coal mining problems
“…United States. Bureau of Mines…”
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7
Hydraulic stimulation increases degasification rate of coalbeds
“…United States. Bureau of Mines…”
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8
Methane and dust control by water infusion Pittsburgh coalbed (Fairview, W. Va.) /
“…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 and dust controls for longwalls Pocahontas no. 3 coalbed, Grundy, Va. /
“…United States. Bureau of Mines…”
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11
Water in fusion an effective and economical longwall dust control /
“…United States. Bureau of Mines…”
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12
Peak methane concentrations during coal mining an analysis /
“…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
Selected geologic factors affecting mining of the Pittsburgh coalbed
“…United States. Bureau of Mines…”
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15
Reducing hazards in underground coal mines through the recognition and delineation of coalbed discontinuities caused by ancient channel processes
“…United States. Bureau of Mines…”
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16
Probability of encountering coalbed discontinuities during vertical and horizontal borehole drilling
“…United States. Bureau of Mines…”
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17
Investigation of the W.E. Dunkle coal mine, Costello Creek, Chulitna District, Alaska /
“…United States. Bureau of Mines…”
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18
Remote reset systems for continuous mining machines used in extended cuts
“…United States. Bureau of Mines…”
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19
Design practices for multiple-seam room-and-pillar mines
“…United States. Bureau of Mines…”
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20
Navigation and control of continuous mining systems for coal mining
“…United States. Bureau of Mines…”
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