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Collahuasi
The Collahuasi or Ujina mine is a large copper mine located at 4,200 m (13,800 ft) altitude in the north of Chile in the Tarapaca Region. Collahuasi represents one of the largest copper reserves in Chile and in the world having estimated reserves of 3.93 billion tonnes of ore grading 0.66% copper. It lies about 15 km east of the copper mine of Quebrada Blanca.
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