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Ventilating practices that minimize explosion hazards in bituminous-coal mines
Recommended practices necessary to minimize possibilities of methane accumulations in coal mines and reduce chances of ignitions from electrical sources; operating plans are discussed; each ventilating plan illustrated by layout of underground working and ventilation system.
Ventilating practices that minimize explosion hazards in bituminous-coal mines
Recommended practices necessary to minimize possibilities of methane accumulations in coal mines and reduce chances of ignitions from electrical sources; operating plans are discussed; each ventilating plan illustrated by layout of underground working and ventilation system.
Ventilating practices that minimize explosion hazards in bituminous-coal mines
U S Bur Mines -- Information Cir
Ankeny, M.J. (author) / Westfield, J. (author) / Kingery, D.S. (author)
1952
6 pages
8 Supp plate
Article (Journal)
English
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