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Some of the hazards of auxiliary fans in coal mines
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Published Year
1940-1949 (1) *
Subject
Fans (Machinery) (1) *
Mine explosions (1)
Mine safety--United States (1)
Mines and mineral resources--United States--Safety measures (1)
Ventilation (1)
Author
Harrington, D. (1)
Warncke, R. G. (1)
