Public Sector Undertaking (PSU) National Aluminium Company Limited (NALCO) has started work on expanding capacity at its alumina refinery in Koraput district of Odisha. The commissioning of capacity enhancement has begun at the power plant, the evaporation plant stacker and bauxite circuit. Other packages in the refinery are now under advanced stage of commissioning. The company is enhancing production capacity at the refinery in Damanjodi, about 400 km from Bhubaneswar, from 1.575 million tonnes to 2.1 million tonnes. It will be further upgraded to 2.275 million tonnes. The work at the refinery lagged after a Maoist attack there two years ago, forcing several contractors and their workers to leave. NALCO also aims to increase the annual capacities of bauxite mine to 63,00,000 tonnes, alumina refinery to 21,00,000 tonnes and aluminium smelter to 4,60,000 tonnes after its Rs.4,402 crore second phase expansion.