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Why miners' portable electric lamps require safety devices
Misuse of flame safety lamps and dangers of mixed lights
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Published Year
1920-1929 (2)
Subject
Safety lamps (2) *
Electric lamps, Portable (1)
Mines and mineral resources--Equipment and supplies (1)
Mines and mineral resources--Research (1)
Author
Ilsley, L. C. (2) *
