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Rotary drilling holes in coalbeds for degasification

Control of longwall gob gas with cross-measure boreholes (upper Kittanning coalbed)

Methane control on longwalls with cross-measure boreholes (Lower Kittanning Coalbed)

Cost comparison of gob hole and cross-measure borehole systems to control methane in gobs

Horizontal trajectories of rotary-drilled holes

Published Year

• 1970-1979 (1)
• 1980-1989 (4)

Subject

• Boring (5) *
• Coal mines and mining--Safety measures (1)
• Coalbed methane drainage (1)
• Coalbed methane drainage--Pennsylvania--Cambria County (1)
• Degassing of coal (1)
• Firedamp (1)
• Longwall mining (1)
• Longwall mining--Pennsylvania--Cambria County--Safety measures (1)
• Mine safety (1)
• Mine ventilation (1)

Author

• Cervik, Joseph. (5) *
• Garcia, F. (2)
• Aul, George N. (1)
• Baker, E. C. (1)
• Campoli, A. A. (1)
• Fields, H. H. (1)
• Goodman, Tobias W. (1)
• Schatzel, Steven J. (1)

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