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Suggested safety rules for installing and using electrical equipment in bituminous coal mines

State mining laws on the use of electricity in and about coal mines

State regulations governing explosion-proof type electric motors in coal mines

State regulations governing the use of trolley wires in mines

Specially recommended trailing cable

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

Maintenance of electrical mine equipment from the viewpoint of the safety inspector

Hazard of igniting coal by electric circuits in mines

Coal-mine fires of electrical origin :their cause and prevention


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