The vast Grasberg copper-gold mine in Indonesian-occupied West Papua is a continuing source of tension between the Indonesian government and those campaigning for West papuan independence. London-based Rio Tinto helped to finance the mine’s expansion and continues to profit from it. The mine is operated by PT Freeport Indonesia, a subsidiary of US-based Freepor McMoRan. West Papuan Amungme Indigenous leader Anthonius Alomang, is now threatening to close the mine down.