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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

Determining the source of longwall gob gas :Lower Kittanning Coalbed, Cambria County, PA

Published Year

• 1970-1979 (2)
• 1990-1999 (1)

Subject

• Mine ventilation (3) *
• Mine gases (2)
• Boring (1)
• Coal mine waste--Pennsylvania--Cambria County (1)
• Coal mines and mining (1)
• Firedamp--Pennsylvania--Cambria County (1)
• Longwall mining--Pennsylvania--Cambria County (1)
• Methane (1)

Author

• Diamond, W. P. (3) *
• Fields, H. H. (1)
• Jeran, P. W., (1)
• Kravits, S. J. (1)
• Oyler, David C. (1)
• Oyler, David C., (1)
• Ulery, J. P. (1)

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