A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
In deep gold mine near Johannesburg, South Africa, dividing wall was built in concrete lined shaft of 24-ft diam for upcast and downcast air; wall extends to depth of 5000 ft in main shaft, and to further 3000 ft depth in subvertical shaft; it is constructed on vertical center line in precast reinforced sections.
In deep gold mine near Johannesburg, South Africa, dividing wall was built in concrete lined shaft of 24-ft diam for upcast and downcast air; wall extends to depth of 5000 ft in main shaft, and to further 3000 ft depth in subvertical shaft; it is constructed on vertical center line in precast reinforced sections.
8,000 foot precast vertical wall
World Construction
Gray, E.E. (author)
World Construction ; 10
1957
Article (Journal)
English
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