terlite Copper, part of the $12.9-billion Vedanta group, is set for a Rs 3,300-crore expansion at Tuticorin in Tamil Nadu. The plant has faced legal battles over ecology issues and has since earmarked about Rs 450 crore for environmental protection. P Ramnath, chief executive officer of Sterlite Copper, said after the expansion, the plant would be Asia’s largest copper manufacturing facility at a single location. It is India’s largest copper producer, with 400,000 tonnes of annual production capacity, supplying 45 per cent of the country’s need.