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Suspended reinforced concrete shaft collar at New Kleinfontein mine
Brief description of procedure, sketches showing geological features of ground, typical timber sets, and cross-section of concrete column. (See also - discussion p 107-9)
Suspended reinforced concrete shaft collar at New Kleinfontein mine
Brief description of procedure, sketches showing geological features of ground, typical timber sets, and cross-section of concrete column. (See also - discussion p 107-9)
Suspended reinforced concrete shaft collar at New Kleinfontein mine
S African Instn Engrs -- J
Richardson, W.D. (Autor:in)
1934
5 pages
Aufsatz (Zeitschrift)
Englisch
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