PLM vs RIO

Polymet Mining Corporation

PolyMet Mining Corp., through its subsidiary, Poly Met Mining, Inc., explores for and develops natural resource properties. Its primary mineral property is the NorthMet project, a polymetallic project that hosts copper, nickel, cobalt, gold, silver, and platinum group metal mineralization covering an area of approximately 4,300 acres located in northeastern Minnesota, the United States. The company was formerly known as Fleck Resources Ltd. and changed its name to PolyMet Mining Corp. in June 1998. PolyMet Mining Corp. was incorporated in 1981 and is headquartered in Saint Paul, Minnesota.

Rio Tinto Plc

Rio Tinto Group engages in exploring, mining, and processing mineral resources worldwide. The company offers aluminum, copper, diamonds, gold, borates, titanium dioxide, salt, iron ore, and uranium. It also owns and operates open pit and underground mines, mills, refineries, smelters, power stations, and research and service facilities. The company was founded in 1873 and is headquartered in London, the United Kingdom.