Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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. (Autor:in) / Westfield, J. (Autor:in) / Kingery, D.S. (Autor:in)
1952
6 pages
8 Supp plate
Aufsatz (Zeitschrift)
Englisch
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