Search U.S. government technical reports digitized or harvested by TRAIL.
Tracer gas as an aid in mine ventilation analysis
Using sulfur hexafluoride as a gaseous tracer to study ventilation systems in mines
Bureau of Mines damage-resistant brattice
Sulfur hexafluoride as a mine ventilation research tool :recent field applications
Laboratory evaluation of spray-applied rigid urethane foams
Face ventilation for oil shale mining
Performance characteristics of large-capacity face ventilation systems for oil shale mining