Search U.S. government technical reports digitized or harvested by TRAIL.
Methane in California gold mines
Effect of a surface borehole on longwall gob degasification(Pocahontas No. 3 Coalbed)
Bleeder system in virgin area in a Pittsburgh coalbed mine
Longwall gob degasification with surface ventilation boreholes above the Lower Kittanning coalbed
Hydraulic stimulation of a surface borehole for gob degasification
Foam stimulation to enhance production from degasification wells in the Pittsburgh coalbed
Directional drilling for coalbed degasification :program goals and progress in 1978
Control of methane by ventilation of shafts during raise drilling