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Production. Copper. Disc-type filters which remove moisture from the copper concentrates at the Arthur mill of the Utah Copper Company. Following this treatment the ore is ready for shipment to the Garfield, Utah smelter of the American Smelting and Refining Company. Sourced from the Library of Congress.

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Production. Copper. Disc-type filters which remove moisture from the copper concentrates at the Arthur mill of the Utah Copper Company. Following this treatment the ore is ready for shipment to the Garfield, Utah smelter of the American Smelting and Refining Company. Sourced from the Library of Congress.

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