Search U.S. government technical reports digitized or harvested by TRAIL.

Keyword Search

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

Published Year

• 1990-1999 (1) *

Subject

• Coal mine waste--Pennsylvania--Ebensburg Region (1)
• Ground control (Mining)--Pennsylvania--Ebensburg Region (1)
• Longwall mining--Pennsylvania--Ebensburg Region (1)

Author

• Bauer, Eric R. (1)
• Chekan, G. J. (1)
• Sames, Gary P. (1) *

• About TRAIL
• FAQ
• Join TRAIL
• Contact Us

Search developed and maintained by the University of Washington Libraries
Copyright 2010