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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

Published Year

• 1930-1939 (5) *

Subject

• Coal mines and mining--Safety measures (5) *
• Electricity in mining (5) *
• Cables (1)
• Coal mines and mining (1)
• Mine fires (1)

Author

• Freeman, Howard Bassett, (2)
• Gleim, E. J. (2)
• Ilsley, L. C. (2)

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