Browse TRAIL Inventories

How leakage of current from an electric shot-firing circuit causes misfires

Performance tests for trailing cables

The grounding of electric systems in and around mines

Specially recommended trailing cable

Suggestions for wiring permissible equipment

Specially recommended trailing cables

Requirements for bolts and similar fastenings for permissible electrical equipment

Notes pertaining to safety inspections of permissible electric mine equipment

Data in reference to installation of cables in shafts and boreholes

Guarding trolley wires in mines

250 versus 500 volts or more for circuits in gassy coal mines

Use of electric power in Castle Gate No. 2 mine, Utah Fuel Co.

Maintaining the permissibility of electric cap lamps

Hazard of igniting coal by electric circuits in mines

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

Reducing "nipping" hazards when tramming coal-mining machinery

Installation of high-tension power circuits in coal mines


Published Year

Subject

Author