A plant worker uses a crane to lift a cask of molten aluminum a Century Aluminum Company plant in Hawesville, Ky. in 2017. Of the five remaining facilities, only the Century Aluminum Sebree plant in Robards, which employs 625 workers, and a smaller Alcoa plant in Massena, New York, run at full capacity. Phillip McKenna/NBC NewsSteinsen, of Century Aluminum, said the company has no plans to shut down its Sebree facility in Robards. In 2015, when the U.S. aluminum production was in steep decline, the EPA ended its industry partnership. In 2019, 7,510 metric tons of PFCs were emitted from global aluminum production, according to a study published last year in the Journal of Geophysical Research — Atmospheres.

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