The Minnesota Court of Appeals has ordered a lower court to review whether the Minnesota Pollution Control Agency tried to suppress federal regulators’ concerns about pollution risks from the proposed PolyMet copper-nickel mine in Hoyt Lakes. It’s prompted by a leaked e-mail from a then-assistant M-P-C-A commissioner, asking the U-S Environmental Protection Agency to not file their written comments on PolyMet’s water quality permit during Minnesota’s public comment period. The Appeals Court cites “undisputed evidence” that the two agencies “departed from typical procedures” in issuing the permit. The Minnesota Legislative Auditor’s office is also reviewing the case. PolyMet officials say the permit meets all requirements of the law and will be upheld.