Hidden History: Maralinga’s Nuclear Tests Left a Paper Trail in Australia

A test range on Aboriginal land

Britain selected sites in Australia for nuclear weapons testing after the Second World War. The Monte Bello Islands, Emu Field and Maralinga became locations for tests and associated experiments. Maralinga, in South Australia, was used for major tests and for smaller trials involving radioactive material.

The consequences were not limited to the blast sites. Aboriginal communities lived across and travelled through the region. The National Archives holds records about the tests, safety measures, official correspondence and the Royal Commission established in 1984. These documents allow researchers to compare public explanations with internal decisions.

What the inquiry found

The Royal Commission examined the conduct of the tests, Australian oversight, radiation exposure and the clean-up. The National Museum of Australia notes that investigations found substantial plutonium contamination remained at Maralinga, prompting further remediation work. That conclusion makes the history more complicated than a single claim that the site was either safe or permanently unusable: hazards varied by location, and remediation was itself contested.

The archive also reminds us that “secret” can mean different things. The tests were publicly known, but important technical details, environmental effects and the experience of affected people were not equally available to the public or treated as equally important.