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These three facilities have a combined annual capacity of 1.5 million metric tonnes. Codelco, not surprisingly, is the world's largest producer of copper. In 2014, the company produced nearly 400,000 tonnes more copper than the world's second largest producer, Aurubis. Flash-continuous technology is used in more than half of all refinieries (about 70 percent), while world refinery capacity utilization in 2013 was estimated to be nearly 80 percent.
Copper mining in the United States has been a major industry since the rise of the northern Michigan copper district in the 1840s. In 2014 the United States produced 1.37 million metric tonnes of copper, worth $9.7 billion, making it the world's fourth largest copper producer, after Chile, China, and Peru.Copper was produced from 27 mines in the US.opper mining activity increased in the early 2000s because of increased price: the price increased from an average of $0.76 per pound for the year 2002, to $3.02 per pound for 2007.