The Ranger Uranium Mine was a uranium mine in the Northern Territory of Australia. The site is surrounded by, but separate from Kakadu National Park, 230 km east of Darwin. The orebody was discovered in late 1969, and the mine commenced operation in 1980, reaching full production of uranium oxide in 1981 and ceased production on 8 January 2021. It was operated by Energy Resources of Australia, a 68% subsidiary of Rio Tinto Group. Uranium mined at Ranger was sold for use in nuclear power stations in Asia, Europe and North America.