A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Mine safety board decision 31 -- Main fan installations at metal mines
Recommendations for installations at underground metal mines; practices are also applicable to non-metallic mines except coal.
Mine safety board decision 31 -- Main fan installations at metal mines
Recommendations for installations at underground metal mines; practices are also applicable to non-metallic mines except coal.
Mine safety board decision 31 -- Main fan installations at metal mines
U S Bur Mines -- Information Cir
1939
2 pages
Article (Journal)
English
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