Mark Sawyer

Greenstone Resources Ltd. engages in the exploration and mining of precious metals. The company was founded on May 3, 1983 and is headquartered in Toronto, Canada.

Xstrata Plc is engaged in the mining industry. Its business units include Xstrata Alloys, Xstrata Copper, Xstrata Zinc, Xstrata Coal, Xstrata Nickel, and Xstrata Technology Services. The Xstrata Alloys business unit produces ferrochrome, primary vanadium and owns carbon and anthracite operations, which supply key raw materials to its ferrochrome smelters. The Xstrata Copper business unit is a global copper producer and also manages a recycling business, Xstrata Recycling. The Xstrata Zinc business unit specializes in the mining and production of zinc. The Xstrata Coal business unit is an exporter of thermal coal and a significant producer of premium quality hard coking coal and semi-soft coal. The Xstrata Nickel business unit focuses on nickel and cobalt production and operates mines, refineries, and processing facilities. The Xstrata Technology Services business unit provides proprietary technologies and specialist services in the areas of mining, mineral processing, and metals extraction to major mining companies. The company was founded in 1926 and is headquartered in Zug, Switzerland.

North River Resources Plc engages in the exploration and development of mineral resource properties. The company's projects include Namib Lead-Zinc, Dordabis Copper, Witvlei Copper and Outjo Projects in Namibia and Monte Muande Project in Mozambique. North River Resources was founded on July 13, 2006 and is headquartered in London, the United Kingdom.