FILE - This Feb. 10, 2016, file photo, shows a former iron ore processing plant near Hoyt Lakes, Minn., that would become part of a proposed PolyMet copper-nickel mine. A judge has ordered a forensic search of computers used by three former top officials at the Minnesota Pollution Control Agency. It's part of an investigation into whether they sought to suppress concerns by federal regulators about pollution risks from the proposed PolyMet copper-nickel mine. The order by a Ramsey County judge also sets a date of Jan. 21, 2019 for an evidentiary hearing, which is expected to last five to 10 days (AP Photo/Jim Mone, File)
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