Search U.S. government technical reports digitized or harvested by TRAIL.
Guarding trolley wires in mines
Notes pertaining to safety inspections of permissible electric mine equipment
Data in reference to installation of cables in shafts and boreholes
An international viewpoint on safeguarding electrical equipment used in gassy mines
Electrical viewpoint in a complete safety survey of a coal mine
Bureau of Mines apparatus for demonstrating electrical ignition of mine gas
Coal-mine fires of electrical origin :their cause and prevention
Installation of high-tension power circuits in coal mines
Reducing "nipping" hazards when tramming coal-mining machinery
State regulations pertaining to hoisting of men
Some signaling systems in metal-mine shafts
Mechanized mining brings new electrical hazards
List of permissible mine equipment approved during 1940
Inspection and testing of mine-type electrical equipment for permissibility
Some information on automatic coupling of mine cars
Permissible mine equipment approved during 1942
Prevention of fires caused by electric arcs and sparks from trolley wires
Permissible mine equipment approved during 1943
Guarding trolley wires in mines
International cooperation in reducing mine hazards
State regulations pertaining to the use of internal-combustion engines underground