Search U.S. government technical reports digitized or harvested by TRAIL.
Laboratory and field tests of a permissible indicating methane detector
Privately owned mine rescue stations
Some check in and out systems for coal mines
Compressed air for operating modern coal-mining equipment
Protective clothing in the mining industry
A million tons of anthracite mined without a fatality
Methane-indicating detectors prove dependable in sampling air in anthracite mines
Hazards of compressed-air jets for ventilating gassy mines
Some phases of haulage accident prevention in anthracite mines