Duluth, MN (KDAL) - The comment period for the NorthMet Mining Project Supplement Draft E-I-S will end March 13th despite requests for an extension. Minnesota D-N-R officials say they’ve received over 19-thousand comments. Under PolyMet’s plan, which has been in the works for several years, they’re looking to build a copper-nickel mine near Hoyt Lakes in the eastern Iron Range. The Department of Natural Resources, Army Corps of Engineers and U-S Forest Service all received extension requests but officials say none included substantive arguments or rationales that weren’t already fully considered. Three public meetings were held to gather input on the process, including one at the DECC.