A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Open pit and underground development of orebodies at bottom of Steep Rock Lake; construction of eight-compartment shaft 17 ft 2 in. by 24 ft; block caving method used underground; ultimate annual production scheduled to reach 5,500,000 tons by 1960.
Open pit and underground development of orebodies at bottom of Steep Rock Lake; construction of eight-compartment shaft 17 ft 2 in. by 24 ft; block caving method used underground; ultimate annual production scheduled to reach 5,500,000 tons by 1960.
Steep rock's Hogarth shaft
Min Congress J
Hamilton, G.B. (author)
1958
3 pages
Article (Journal)
English
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