High Quality Content by WIKIPEDIA articles! Copper mining in the United States has been a major industry since the rise of the northern Michigan copper district in the 1840s. In 2007 the United States produced 1.19 million metric tonnes of copper, worth $8.8 billion, making it the world`s third largest copper producer, after Chile and Peru. The nation produces 63% of the copper it uses, relying on imports from Chile, Canada, Peru, and Mexico for the remaining 37%. Top copper producing states in 2007 were (in descending order) Arizona, Utah, New Mexico, Nevada, and Montana.