Rio Tinto and Alcoa of Australia have struck an agreement with the state government to terminate a bauxite mining joint venture on the Mitchell Plateau in WA's far north, paving the way for the area to be included in a new national park.

Rio Tinto and Alcoa of Australia have struck an agreement with the state government to terminate a bauxite mining joint venture on the Mitchell Plateau in WA's far north, paving the way for the area to be included in a new national park.