Radioactive ores were first extracted in South Australia at Radium Hill in 1906 and Mount Painter in 1911. 2,000 tons of ore were treated to recover radium for medical use. Several hundred kilograms of uranium were also produced for use in ceramic glazes. As of 2017, there were three operational uranium mine sites: Olympic Dam (BHP), Ranger (Energy Resources of Australia), and Beverley Four Mile (Heathgate Resources).