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Mining limestone by caving method at crestmore mine of Riverside cement Co., Crestmore, Calif.
Hoisting capacity 300 tons per hr; details of mining costs, totalling $0.2482 per ton of rock hoisted.
Mining limestone by caving method at crestmore mine of Riverside cement Co., Crestmore, Calif.
Hoisting capacity 300 tons per hr; details of mining costs, totalling $0.2482 per ton of rock hoisted.
Mining limestone by caving method at crestmore mine of Riverside cement Co., Crestmore, Calif.
U S Bur Mines -- Information Cir
Robotham, C.A. (Autor:in)
1934
20 pages
Supp plates
Report
Englisch
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