Search U.S. government technical reports digitized or harvested by TRAIL.
Three coal mine gob degasification studies using surface boreholes and a bleeder system
Face ventilation measurement with sulfur hexafluoride (SF₆)
Assessing the methane hazard of gassy coals in storage silos
How to evaluate longwall dust sources with gravimetric personal samplers
Determining face methane-liberation patterns during longwall mining
Improved shearer-clearer system for double-drum shearers on longwall faces
Exhaust ventilation of deep cuts using a continuous-mining machine