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Directionally controlled drilling to horizontally intercept selected strata, upper Freeport coalbed, Green County, Pa.

Directional drilling for coalbed degasification :program goals and progress in 1978

Published Year

• 1970-1979 (2)

Subject

• Mine gases (2) *
• Mine ventilation (2)
• Boring (1)
• Coal mines and mining (1)
• Methane (1)

Author

• Diamond, W. P. (2) *
• Fields, H. H. (1)
• Jeran, P. W., (1)
• Oyler, David C. (1)
• Oyler, David C., (1)

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