Search U.S. government technical reports digitized or harvested by TRAIL.
Methane in the Pittsburgh coalbed, Washington County, Pa.
Effects of hydraulic stimulation on coalbeds and associated strata
Hydraulic stimulation of a surface borehole for gob degasification
Methane accumulations in coal mine roof cavities
Experimental studies on the origin and accumulation of coalbed gas
Grouting horizontal drainage holes in coalbeds
Three coal mine gob degasification studies using surface boreholes and a bleeder system
Practical ignition problems related to intrinsic safety in mine equipment :four short-term studies