Search U.S. government technical reports digitized or harvested by TRAIL.
Some data about fire-fighting facilities at metal mines in the United States
Major disasters at metal and nonmetal mines and quarries in the United States (excluding coal mines)
Data on Pumping at the Anthracite Mines of Pennsylvania
Acid-Mine-Drainage Problems: Anthracite Region of Pennsylvania
Barrier Pillars in the Western Middle Field: Anthracite Region of Pennsylvania