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

Keyword Search

Geologic factors in coal mine roof stability :a progress report

Coal mine roof instability :categories and causes

Published Year

• 1980-1989 (2)

Subject

• Coal mines and mining--Safety measures (2)
• Coal--Geology (2) *
• Mine roof control (2)

Author

• Moebs, Noel N. (2)
• Stateham, Raymond M. (2) *

• About TRAIL
• FAQ
• Join TRAIL
• Contact Us

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