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

Keyword Search

Permissible mine equipment approved by the Bureau of Mines during 1967-68 :a supplement to Bulletin 543 and Information circulars 8220, 8299, and 8372

Published Year

• 1970-1979 (1) *

Subject

• Mine safety (1)
• Mining machinery (1)

Author

• Lee, F. R. (1) *

• About TRAIL
• FAQ
• Join TRAIL
• Contact Us

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