Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Shaft-sinking practices and costs
Review of best methods of performing all phases of shaft sinking, with particular attention to metal mines; present tendency is to sink shafts with more nearly square sections than formerly; round shafts are used where hydrostatic pressure is to be withstood; vertical shafts are preferred, except in bedded deposits and veins dipping about 45°; details of practice and costs at specific mines.
Shaft-sinking practices and costs
Review of best methods of performing all phases of shaft sinking, with particular attention to metal mines; present tendency is to sink shafts with more nearly square sections than formerly; round shafts are used where hydrostatic pressure is to be withstood; vertical shafts are preferred, except in bedded deposits and veins dipping about 45°; details of practice and costs at specific mines.
Shaft-sinking practices and costs
U S Bur Mines -- Bul
Gardner, E.D. (Autor:in) / Johnson, J.F. (Autor:in)
1932
110 pages
Supp plates
Aufsatz (Zeitschrift)
Englisch
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| Engineering Index Backfile | 1902
| Tema Archiv | 2013
| Engineering Index Backfile | 1948
| Engineering Index Backfile | 1948