A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Natural ventilation of Michigan copper mines
Mining conditions in copper mines of Keweenaw Peninsula; mining methods; ventilation conditions; air conditions; specific notes on practices at Ahmeek, Conglomerate, Osceola, Isle Royale and Champion mines; recommendations for improvement of ventilation and fire protection.
Natural ventilation of Michigan copper mines
Mining conditions in copper mines of Keweenaw Peninsula; mining methods; ventilation conditions; air conditions; specific notes on practices at Ahmeek, Conglomerate, Osceola, Isle Royale and Champion mines; recommendations for improvement of ventilation and fire protection.
Natural ventilation of Michigan copper mines
U S Bur Mines -- Tech Paper
McElroy, G.E. (author)
1932
40 pages
Supp plates
Report
English
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