Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Sinking No. 3 shaft at westvaco trona mine, intermountain chemical co., sweetwater county, wyo
Trona is mined by room-and-pillar method; description of trona deposit; formations penetrated by No. 3 shaft, and methods of breaking and loading rock and placing concrete shaft lining while sinking it; shaft has circular cross section, with inside diameter of 18 ft and is lined with concrete throughout its entire depth.
Sinking No. 3 shaft at westvaco trona mine, intermountain chemical co., sweetwater county, wyo
Trona is mined by room-and-pillar method; description of trona deposit; formations penetrated by No. 3 shaft, and methods of breaking and loading rock and placing concrete shaft lining while sinking it; shaft has circular cross section, with inside diameter of 18 ft and is lined with concrete throughout its entire depth.
Sinking No. 3 shaft at westvaco trona mine, intermountain chemical co., sweetwater county, wyo
US Bur Mines -- Information Cir
Wideman, F.L. (Autor:in) / Romano, C.A. (Autor:in) / Berry, T. (Autor:in)
1959
31 pages
Report
Englisch
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