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Search U.S. government technical reports digitized or harvested by TRAIL.
Keyword Search
5 results returnedSpecially recommended trailing cable
List of motors available to prospective builders of permissible outfits
250 versus 500 volts or more for circuits in gassy coal mines
Evolution of methane detecting devices for coal mines
List of permissible mine equipment :approved to January 1, 1937
Published Year
Subject
- Coal mines and mining--Safety measures (5) *
- Electricity in mining (2)
- Cables (1)
- Explosives (1)
- Methane (1)
Author
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