Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Mining methods and costs at the Hecla and Star mines, Burke, Idaho
Paper is partly revision of earlier articles by same author, as in Am. Inst. Min. and Met. Engrs. Trans., vol. 72, 1925, and in Min. Congress Jl., June 1928; history; geology; ore characteristics; prospecting and exploration; sampling and estimation of ore; development and mining methods; ore extraction and dilution figures are not known; wage, contract, and bonus; ventilation; safety; costs.
Mining methods and costs at the Hecla and Star mines, Burke, Idaho
Paper is partly revision of earlier articles by same author, as in Am. Inst. Min. and Met. Engrs. Trans., vol. 72, 1925, and in Min. Congress Jl., June 1928; history; geology; ore characteristics; prospecting and exploration; sampling and estimation of ore; development and mining methods; ore extraction and dilution figures are not known; wage, contract, and bonus; ventilation; safety; costs.
Mining methods and costs at the Hecla and Star mines, Burke, Idaho
U. S. Bur. Mines -- Information Cir
Foreman, C.H. (Autor:in)
1930
21 pages
12 Figs. on Supp. plates
Aufsatz (Zeitschrift)
Englisch
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