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San Francisco Usa North America Small Gangue Ore Concentrate For Sale

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Shaft and hoist there. san francisco and gertrud1s sec173 tions both use a fifth shaft called amistad, which is used for hoisting ore only, and at the collar of which is located the mill. the depth of this shaft is but 750 feet, which causes san francisco and gertrudis to hoist in ears ll. ore from the 1,ooo-foot level, at present the maximum depth

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