Chilean miner Doña Inés de Collahuasi is the country’s fourth largest copper producer and held the world's sixth largest reserves. Its operation consists of two main porphyry copper deposits, Ujina and Rosario, as well as a smaller deposit called Huinquintipa that contains only sulfide mineralization and copper oxides. Collahuasi, which has an expected mine life of more than 50 years, processes copper sulphides and oxide ores to produce copper concentrates and cathodes, respectively. Its on-site facilities include open pit mines, a concentrator plant, a SX-EW plant, and a 203km pipeline to transport concentrates from the mine to the port of Punta Patache, 60km south of Iquique, in northern Chile. Collahuasi is controlled by Swiss-based giant Glencore and UK company Anglo American, both with a 44% share. The remainder belongs to Japan Collahuasi Resources B.V, a Japanese consortium led by Mitsui and also comprised by Nipón Mining & Metals and Mitsui Mining & Smelting.
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