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

Keyword Search

Design and development of drill equipment

Gas migration characteristics of coalbeds

Published Year

• 1960-1969 (2)

Subject

• Coal mines and mining (2) *
• Boring machinery (1)
• Methane (1)
• Mine gases (1)
• Mine ventilation (1)

Author

• Hadden, J. D. (2) *
• Cervik, Joseph, (1)
• Sainato, Albert, (1)

• About TRAIL
• FAQ
• Join TRAIL
• Contact Us

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