Copper - USGS
Government Stockpile: None. U.S. Geological Survey, Mineral Commodity Summaries, January 2021 . COPPER . Events, Trends, and Issues: In 2020, U.S. mine production of copper decreased by an estimated 5%, primarily owing to reduced output from the Bingham Canyon Mine in Utah and the Chino Mine in New Mexico. At Bingham Canyon, ore grades were ...
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