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Geology, mining, and methane content of the Freeport and Kittanning coalbeds in Indiana and surrounding counties, Pa.

Published Year

• 1970-1979 (1)

Subject

• Coal mines and mining--Pennsylvania (1)
• Coal--Geology--Pennsylvania (1) *
• Firedamp (1) *

Author

• Iannacchione, Anthony. (1)
• Puglio, D. G. (1)

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