mercury

Barrick Gold Corporation, the largest pure gold mining company in the world, is headquartered in Toronto, Canada. It has four regional business units (RBU's) located in Australia, Africa, North America, and South America. Barrick is currently undertaking mining and exploration projects in Papua New Guinea, the United States, Canada, Australia, Peru, Chile, Russia, South Africa, Argentina, and Tanzania. On January 20, 2006, Barrick acquired a majority share of Placer Dome.

The main company of the Chennai, India-based Sanmar Group, Chemplast is a major producer of PVC, caustic soda, chlorine, and chlorinated solvents including carbon tetrachloride refrigerant gases. With a product inventory ranging from ozone depleting substances to persistent organic pollutants, the company's operations -- particularly in its principal manufacturing facility in Mettur Dam -- is under attack for environmental pollution.