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

Keyword Search

Permissible mine equipment approved by the bureau of mines during 1953-62 :a supplement to Bulletin 543

Published Year

• 1960-1969 (1)

Subject

• Mines and mineral resources--Safety measures (1)
• Mining machinery (1) *

Author

• Evans, R. L. (1) *
• Lee, F. R. (1)

• About TRAIL
• FAQ
• Join TRAIL
• Contact Us

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