Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Sinking methods and costs at Burgin Shaft, Bear Creek mining co., east tintic project, Utah County, Utah
Sinking 3-compartment vertical shaft 1100 ft; operation featured Cryderman positive action and clam-type shaft mucker; shaft was completed in 142 days by shaft crew of 10 men and top force of 10 men, including supervision.
Sinking methods and costs at Burgin Shaft, Bear Creek mining co., east tintic project, Utah County, Utah
Sinking 3-compartment vertical shaft 1100 ft; operation featured Cryderman positive action and clam-type shaft mucker; shaft was completed in 142 days by shaft crew of 10 men and top force of 10 men, including supervision.
Sinking methods and costs at Burgin Shaft, Bear Creek mining co., east tintic project, Utah County, Utah
US Bur Mines -- Information Cir
Everett, F.D. (Autor:in)
1959
26 pages
Report
Englisch
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