El Pilar mine
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The El Pilar mine is a large proposed copper mine located in the north-west of Mexico in Sonora. El Pilar represents one of the largest copper reserve in Mexico and in the world having estimated reserves of 685.8 million tonnes of ore grading 0.28% copper.
- "El Pilar mine". mercatorminerals.com. 2012. Retrieved 2013-07-24.