PolyMet Mining Corp. (PolyMet) is a development-stage company. The Company is engaged in the exploration and development of natural resource properties. The Company's sole mineral property is the NorthMet Project, which is located in St. Louis County in the Mesabi Iron Range mining district approximately 60 miles north of Duluth, Minnesota, the United States. The NorthMet Project consists of NorthMet copper-nickel-precious metals ore body, and the Erie Plant, a processing facility located approximately six miles from the ore body. The NorthMet Project covers a total of approximately 16,700 acres or over 25.9 square miles. The NorthMet mine site totals approximately 4,300 acres or over 6.5 square miles of leased mineral rights and the Erie Plant site totals approximately 12,400 acres or over 19.4 square miles of freehold land. The Erie Plant consists of crushing, grinding and milling facility.