Search U.S. government technical reports digitized or harvested by TRAIL.
Abnormal pressures in explosion-proof compartments of electrical mining machines
Hazards from low or under voltage
Guarding trolley wires in mines
Notes pertaining to safety inspections of permissible electric mine equipment
Electrical viewpoint in a complete safety survey of a coal mine
Reducing "nipping" hazards when tramming coal-mining machinery
Prevention of fires caused by electric arcs and sparks from trolley wires
Guarding trolley wires in mines
Effect of temperature on flame-arresting properties of flat joints in explosion-proof mine equipment
A study to determine factors causing pressure piling in testing explosion-proof enclosures
Potential uses for 400 Hz electrical power systems in mining