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Bauer, Eric R.

Influence of subjacent gob on longwall development mining in the Upper Kittanning Coalbed of south-central Pennsylvania / by E.R. Bauer, G.J. Chekan, and G.P. Sames. - Washington, D.C. : Bureau of Mines, U.S. Dept. of the Interior, 1992. - 13 p. : ill. ; 27 cm. - Report of investigations ; 9403 . - Report of investigations (United States. Bureau of Mines ; 9403. .

Includes bibliographical references (p. 13).

LCCN: 91043726

Subjects--Topical Terms:
Ground control (Mining)--Pennsylvania--Ebensburg Region.
Longwall mining--Pennsylvania--Ebensburg Region.
Coal mine waste--Pennsylvania--Ebensburg Region.

LC Class. No.: TN23 TN288 / .U43 no. 9403

Dewey Class. No.: 622 s 622/.334

Gov. Doc. Class. No.: I 28.22:9403