Search U.S. government technical reports digitized or harvested by TRAIL.
Approval of newly developed self-contained breathing apparatus, instructions in its care and use, and training procedure
Procedure used in fighting and sealing a fire in an Ohio coal mine and recovery of the mine by air-locking methods
Outcrop and underground mine fires in Allegeny County, Pa.
Small portable coal-dust explosion gallery
Fire fighting facilities at four Pennsylvania bituminous-coal mines