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

Comparison of rotary and in-hole motor techniques for drilling horizontal boreholes in coal

Published Year

• 1980-1989 (2) *

Subject

• Boring (2) *
• Mine ventilation (2) *
• Coal mines and mining--Safety measures (1)
• Coalbed methane drainage--Pennsylvania (1)
• Firedamp (1)

Author

• Campoli, A. A. (1)
• Cervik, Joseph. (1)
• Finfinger, Gerald L. (1)
• Kravits, S. J. (1)
• Sainato, Albert. (1)
• Schatzel, Steven J. (1)

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