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Mine man-trip and ambulance cars
Control of roof and prevention of accidents from falls of rock and coal
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Published Year
1940-1949 (2)
Subject
Coal mines and mining--Safety measures (2) *
Mine roof control (1)
Mine safety (1)
Author
Sloman, Harold J. (2) *
Forbes, J. J. (1)
Mechling, M. J. (1)
