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Influence of subjacent gob on longwall development mining in the Upper Kittanning Coalbed of south-central Pennsylvania /

Bibliographic Details
Main Author: Bauer, Eric R.
Corporate Author: United States. Bureau of Mines
Other Authors: Chekan, G. J. (Gregory J.), Sames, Gary P.
Format: Government Document Microform Book
Language:English
Published: Washington, D.C. : Bureau of Mines, U.S. Dept. of the Interior, 1992.
Series:Report of investigations (United States. Bureau of Mines) ; 9403.
Subjects:
Ground control (Mining) > Pennsylvania > Ebensburg Region.
Longwall mining > Pennsylvania > Ebensburg Region.
Coal mine waste > Pennsylvania > Ebensburg Region.

Evans: US Documents Microfiche (3rd floor)

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