Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Ione-carbondale clays, Amador County, Calif
Area is 2 mi northwesterly from Ione; 70 holes aggregating 8837 ft were drilled, and about 10.3 acres of land cleared; clay beds vary from 13 to 196 ft thick, with loose overburden averaging about 11.9 ft; composite sample showed 23.6% recoverable alumina, with ferric oxide content 2.8%; topography of area is ideal for open pit mining and plant site.
Ione-carbondale clays, Amador County, Calif
Area is 2 mi northwesterly from Ione; 70 holes aggregating 8837 ft were drilled, and about 10.3 acres of land cleared; clay beds vary from 13 to 196 ft thick, with loose overburden averaging about 11.9 ft; composite sample showed 23.6% recoverable alumina, with ferric oxide content 2.8%; topography of area is ideal for open pit mining and plant site.
Ione-carbondale clays, Amador County, Calif
U S Bur Mines -- Report Investigations
Johnson, F.T. (Autor:in) / Ricker, S. (Autor:in)
1948
6 pages
Supp plates
Report
Englisch
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