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

Keyword Search

Ventilation at the anthracite collieries of the northern Pennsylvania field

Published Year

• 1930-1939 (1)

Subject

• Anthracite coal--Pennsylvania (1) *
• Mine ventilation (1)

Author

• McElroy, G. E. (1) *

• About TRAIL
• FAQ
• Join TRAIL
• Contact Us

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