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FILE - In this Oct. 4, 2011, file photo, a core sample drilled from underground rock near Ely, Minn., shows a band of shiny minerals containing copper, nickel and precious metals, center, that Twin Metals Minnesota LLC, hopes to mine near the Boundary Waters Canoe Area Wilderness in northeastern Minnesota. Opponents of the proposed Twin Metals copper-nickel mine sued Wednesday, May, 6, 2020, to challenge the federal government's renewal of the company's mineral rights leases, saying the government failed to conduct a full-scale environmental review of the project. (AP Photo/Steve Karnowski, File)

FILE - In this Oct. 4, 2011, file photo, a core sample drilled from underground rock near Ely, Minn., shows a band of shiny minerals containing copper, nickel and precious metals, center, that Twin Metals Minnesota LLC, hopes to mine near the Boundary Waters Canoe Area Wilderness in northeastern Minnesota. Opponents of the proposed Twin Metals copper-nickel mine sued Wednesday, May, 6, 2020, to challenge the federal government's renewal of the company's mineral rights leases, saying the government failed to conduct a full-scale environmental review of the project. (AP Photo/Steve Karnowski, File)

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