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

Keyword Search

Field evaluation of three longwall pillar systems in a Kentucky coal mine

Published Year

• 1980-1989 (1)

Subject

• Columns--Testing (1) *
• Ground control (Mining) (1)
• Longwall mining--Kentucky--Letcher County (1)

Author

• Barton, T. M. (1)
• Mark, Christopher. (1)

• About TRAIL
• FAQ
• Join TRAIL
• Contact Us

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