Radioactive ores were first extracted at Radium Hill in 1906, and Mount Painter in South Australia in the 1930s, to recover radium for medical use. Several hundred kilograms of uranium were also produced. Of the world's proven estimated uranium reserves (5,404,000 tonnes), 31% are held in Australia (1,673,000 tonnes), ahead of the second largest, Kazakhstan (12.1% or 651,800 tonnes). In terms of production, Canada is the largest supplier to export markets, followed by Kazakhstan and Australia. Uranium mined in Australia is mainly for export. Australia exported 50,235 tonnes of uranium oxide concentrate in the five years to 2008, worth A$2.9 billion.
Following the Japanese Fukushima nuclear disaster in early 2011, many countries are scaling back their nuclear power production, with some setting deadlines for a complete shutdown of all nuclear power reactors. It is expected that this may impact on demand for Australian Uranium. However, State governments have now approved mine development in Western Australia and Queensland. But as of 2013 uranium prices are very low, and it is unlikely that any new projects will enter active development until the market improves.
Historically, many prospective Australian uranium mines have been constrained by active antinuclear opposition. For several decades uranium mining has been a major part of the Australian political landscape, with opposition groups citing the wide ranging environmental impacts, indigenous land access and nuclear proliferation as reasons for ceasing or restricting the industry. The debate has resulted in limitations on mining and export activities, with Federal and State governments occasionally backflipping on public policy.