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Methane-indicating detectors prove dependable in sampling air in anthracite mines
Hazards of compressed-air jets for ventilating gassy mines
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Published Year
1930-1939 (2)
Subject
Coal mines and mining--Safety measures (2)
Mine ventilation (2) *
Anthracite coal (1)
Compressed air (1)
Mine safety (1)
Author
Currie, R. D. (2) *
Naus, L. L. (1)
