Search U.S. government technical reports digitized or harvested by TRAIL.
Use of steel sets in underground coal
Selected pneumatic gunites for use in underground mining :a comparative engineering analysis
Remedial and strata replacement techniques on longwall faces :a report on the state of the art
Longwall roof support technology in the eighties :a state-of-the-art report
Human factors contributing to groundfall accidents in underground coal mines :workers' views
Geologic conditions affecting coal mine ground control in the western United States
Application of stereoscopic (3-D) slides to roof and rib hazard recognition training