Copper Manual

Copper Manual

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1 shaft is a direct-acting hoist, with combination cone and straight-face drum, and two 32 x 72 Nord- berg Corliss engines. The erection of this hoist was ... 2 shaft is down 69 feet below the sixteenth level. The steel rock house, breakers andanbsp;...

Title:Copper Manual
Author:D. Houston & Co
Publisher: -


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