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metal prints furnace metal prints copper metal prints historical metal prints smelting metal prints copper smelting metal prints history of science metal prints industry metal prints industrial metal prints technology metal prints

photographs furnace photos copper photos historical photos smelting photos copper smelting photos history of science photos industry photos industrial photos technology photos

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Copper foundry. Historical artwork of a furnace in operation during copper smelting. Smelting involves heating the copper ore to a high temperature with a reducing agent and a flux. The reducing agent reacts with the metal compounds, producing pure copper, while the flux reacts with the other rock minerals to give a liquid slag that can easily be removed. Copper occurs naturally as impure metal and in sulphide ores. The foundrymen are not wearing any protective clothing. This 19th century engraving is of Messrs. Newton, Keates & Co.'s Copper Foundry in St Helens, Lancashire, England.

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