Longwall gate road roof instability and methods of control in the lower Kittanning Coalbed of Central Pennsylvania

An edition of Longwall gate road roof instability and methods of control in the lower Kittanning Coalbed of Central Pennsylvania (1992)

Longwall gate road roof instability and methods of control in the lower Kittanning Coalbed of Central Pennsylvania

By Eric R. Bauer

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Publish Date

1992

Publisher

U.S. Dept. of the Interior, Bureau of Mines

Language

eng

Pages

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