Search U.S. government technical reports digitized or harvested by TRAIL.
Abnormal pressures in explosion-proof compartments of electrical mining machines
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
Electrical viewpoint in a complete safety survey of a coal mine
The importance of adequate voltage for distribution systems in coal mines
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
Inspection and testing of mine-type electrical equipment for permissibility
Prevention of fires caused by electric arcs and sparks from trolley wires
Guarding trolley wires in mines
A study to determine factors causing pressure piling in testing explosion-proof enclosures