File:Evolution copper smelting.svg
From Infogalactic: the planetary knowledge core
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Summary
Evolution of copper making processes share, in the global copper production. Figures refer to number of smelters, not the number of smelting furnaces, as individual smelters often used multiple furnaces, sometimes of different types.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 06:14, 5 January 2017 | | 1,587 × 985 (28 KB) | 127.0.0.1 (talk) | Evolution of copper making processes share, in the global copper production. Figures refer to number of smelters, not the number of smelting furnaces, as individual smelters often used multiple furnaces, sometimes of different types. |
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