Description Playfair Mining doesn't want it all, just its fair share of the mineral exploration properties in North America. The company has three properties in Newfoundland: the Gregory River gold and copper project, the Grey River tungsten molybdenum project, and the Granite Lake tungsten and molybdenum project. In 2007, Playfair bought three advanced-stage tungsten properties in the Yukon Territory and the Northwest Territories. The company aims to develop the Grey River area into the world's largest tungsten producer outside of China. A significant amount of molybdenum was discovered at Granite Lake in 2008.