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Aluminium industry in the United States : ウィキペディア英語版 | Aluminium industry in the United States
The aluminium industry in the United States in 2014 produced 1.72 million metric tons of primary aluminium, worth 3.97 billion dollars, at nine aluminium smelters. In addition, the US produced 1.70 million tons of secondary aluminium from old (post-consumer) scrap, and 1.93 million tons of aluminium from new (manufacturing) scrap. The US was the world's 6th largest producer of primary aluminium in 2014.The industry employed 29,000 people. 〔E. Lee Bray, (Aluminum ), US Geological Survey, Mineral Commodity Summary 2015, Jan.2015.〕 ==Primary production== In 2014, primary aluminium, which is produced from bauxite, was produced by three companies at nine smelters. Primary aluminum is preferred for high-quality uses such as aircraft. The leader in US production was Alcoa. Also operating multiple primary plants was Century Aluminum. Primary Aluminium Smelters in the US
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