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Image 6 of Catalogue no. 5, Union iron works. Gold milling, metallurgical and mining machinery ... OHlVt HE(J |g 6 im ' ) of Builders of. Union Iron Works, SAN FRANCISCO, CAL, MINING MACHINERY for the Reduction of Gold, Silver, Lead and Copper Ores. GOLD AND SILVER MILLS,... Contributor: Union Iron Works, San Francisco Date: 1898

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