Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Mining practices, methods, and costs at mine no. 4, of Marquette range, Michigan
Mine located at Southeastern end of Swanzy district, 3 mi. from Gwinn; history of district; geology; ore and rock characteristics; prospecting, exploration, and development; mining methods and practice; costs.
Mining practices, methods, and costs at mine no. 4, of Marquette range, Michigan
Mine located at Southeastern end of Swanzy district, 3 mi. from Gwinn; history of district; geology; ore and rock characteristics; prospecting, exploration, and development; mining methods and practice; costs.
Mining practices, methods, and costs at mine no. 4, of Marquette range, Michigan
U. S. Bur. Mines -- Information Cir
Graff, W.W. (Autor:in)
1930
8 pages
3 Figs.
Report
Englisch
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