Amnesty International (AI) has urged the Indian authorities to order the immediate clean-up of an alumina refinery in Orissa, following a high court decision to reject plans for its expansion by a subsidiary of the UK-based Vedanta Resources. The High Court of Orissa upheld the Indian government’s decision made in August 2010 to reject Vedanta Aluminium's plans for the sixfold expansion of the Lanjigarh refinery, finding that the project violated the country’s environmental laws. (Letters)