Search U.S. government technical reports digitized or harvested by TRAIL.
A method for extinguishing and removing burning coal refuse banks,
Procedures for evaluating hazards to coal mining operations from hydrocarbon reservoirs
Methane in the Pittsburgh coalbed, Washington County, Pa.
Peak methane concentrations during coal mining:an analysis
Mathematical study of a propagating flame and its induced aerodynamics in a coal mines passageway
Methane analyzer system to record continuously the methane content of coal mine ventilation air
Effects of hydraulic stimulation on coalbeds and associated strata
Hydraulic stimulation of a surface borehole for gob degasification
Humidity :a cyclic effect in coal mine roof stability
Methane accumulations in coal mine roof cavities
Effects of time between exposure and support on mine roof stability, Bear Coal Mine, Somerset, Colo.
Experimental studies on the origin and accumulation of coalbed gas