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

Published Year

• 1980-1989 (1)

Subject

• Boring (1) *
• Coalbed methane drainage--Pennsylvania (1)
• Mine ventilation (1)

Author

• Finfinger, Gerald L. (1)
• Kravits, S. J. (1)
• Sainato, Albert. (1) *

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