 It is located 80 km north of the China Mongolia border giving the companies that produce there an added benefit (China is the world's biggest market for commodities futures).In September 2010 Oyu Tolgoi reserves were placed at 81.3 billion pounds for copper and 46.4 million ounces for gold.Construction of the Oyu Tolgoi mine was 15% complete at the end of March 2011, ahead of schedule which calls for first production in 2013 and full production in 2018.