PolyMet Mining Corp. operates in the Copper ores sector. PolyMet Mining Corp. is a development-stage company. The Company is engaged in the exploration and development of natural resource properties. Its sole mineral property is the NorthMet Project, a polymetallic deposit located in northeastern Minnesota, the United States. During the fiscal year ended January 31, 2011, it conducted exploration, development and acquisition activities only and did not conduct any operations that generated revenues. The Company owns a large processing facility, a tailings disposal facility, and extensive associated infrastructure located approximately six miles west of its NorthMet deposit. The Erie Plant is a large processing facility and associated infrastructure located approximately six miles west of its NorthMet deposit. The plant is located approximately six miles west of its NorthMet ore body, about five miles north-northwest of the town of Hoyt Lakes, itself located about 25 miles west of Virginia, Minnesota.