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Copper, copper ore, refined copper
Description A metal element, "Cu". Cooper ore is all copper ores and concentrates of specified Cu content intended for treatment for copper recovery. Refined copper is obtained by fire refining or electrolysis, recovered from secondary materials or directly from ores by leaching. (United Nations, 1977, pp. 111, 157-158)
Source United Nations (1977a). 1977 Supplement to the Statistical Yearbook and the Monthly Bulletin of Statistics -- Methodology and Definitions. Statistical Office, Series S, Suppl. 2 and Series Q, Suppl. 2 (United Nations publication, Sales No. E.78.XVII.10).
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