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
Building stoppings in mines with large openings
Using inflatable stoppings during production in noncoal mines
Self-sealing brattice for coal mine rescue and recovery
Quick-fix blowout stoppings for hardrock mines
Bureau of Mines damage-resistant brattice
Correction factors for low-velocity airflow measurements in mines
Forecasting methane hazards in metal and nonmetal mines
Water spray vent tube cooler for hot stopes :a preliminary report