Indonesia’s state-owned mining holding company PT Indonesia Asahan Aluminium (Inalum) is close to finalizing a multi-billion-dollar deal to acquire a majority stake in the giant Grasberg copper mine, government officials said as quoted by Reuters on Saturday. Multinational diversified miner Rio Tinto confirmed in May that it was in talks to potentially sell its stake in the Grasberg copper/gold mine, in Indonesia, to Inalum for $3.5-billion, according to Mining Weekly. Every year, the Grasberg mining site, which is operated by PT Freeport Indonesia, dumps millions tons of mining waste into the Ajkwa River system in Indonesia, Bloomberg reports. The company has been doing it for decades and is demanding the right to keep at it for decades to come.