 State pollution regulators have issued the last major state permits sought by developers of the planned PolyMet Copper-nickel mine in northeastern Minnesota, leaving only one major federal permit still pending. The Minnesota Pollution Control Agency announced its approval of the Air and Water Quality Permits for the project Thursday. It also certified that the companies plan to mitigate the mines impact on wetlands will meet state water quality standards. PolyMet would be the state's first copper-nickel mine. Critics of the open pit mine near Babbit cite the risks of acid mine drainage and dam safety concerns. PolyMet says it can operate without harming the environment while providing hundreds of jobs. If you enjoyed this segment of Lakeland news please consider making a tax-deductible contribution to Lakeland PBS.