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Maralinga is a desert area around large located in the west of South Australia, within the Great Victoria Desert. The area is best known for being the location of several British nuclear tests in the 1950s.
In January 1985, in recognition of their native title, freehold title was granted to the Maralinga Tjarutja, a southern Pitjantjatjara Aboriginal Australian people, over some land. Around the same time, the McClelland Royal Commission identified significant residual nuclear contamination at some sites. Under an agreement between the governments of the United Kingdom and Australia, efforts were made to clean up the site before the Maralinga people resettled on the land in 1995. The main community, which includes a school, is Oak Valley. There are still concerns that some of the ground is still contaminated, despite two attempts at cleanup.
On 27 September 1956, Operation Buffalo commenced at Maralinga, as Emu Field was found to be excessively remote. The operation consisted of the testing of four . Two were set atop towers, one at ground level, and one released by a Royal Air Force Vickers Valiant bomber from a height of . This was the first launching of a British atomic weapon from an aircraft. Operation Buffalo
Operation Antler followed in 1957. Antler was designed to test the triggering mechanisms of the weapons. Three tests began in September. The first two tests were conducted from towers; the last was suspended from balloons. Yields from the weapons were 1 kiloton, 6 kilotons and 25 kilotons respectively.
Participants in the test programme were prohibited from disclosing details of its undertakings. Risking incarceration, nuclear veteran Avon Hudson became a whistle-blower and spoke out to the media in the 1970s. His disclosures helped pave the way towards a public inquiry into the tests and their legacy.
The McClelland Royal Commission of 1984–1985 identified significant residual contamination at some sites. British and Australian servicemen were purposely exposed to fallout from the blasts, to study radiological effects. The local Aboriginal people have claimed they were Nuclear fallout by the tests and, in 1994, the Australian Government reached a compensation settlement with Maralinga Tjarutja of $13.5 million in settlement of all claims in relation to the nuclear testing. Previously many of these facts were kept from the public.
Under an agreement between the governments of the United Kingdom and Australia in 1995, efforts were made to clean up the site, being completed in 1995. Tonnes of soil and debris contaminated with plutonium and uranium were buried in two trenches about deep. The effectiveness of the cleanup has been disputed on a number of occasions.
In 2003 South Australian Premier Mike Rann and Education Minister Trish White opened a new school at Oak Valley, replacing what had been described as the "worst school in Australia".
It was found in 2021 that radioactive ("hot") particles persist in the soil, after international multidisciplinary team of scientists studied the results produced by a machine at Monash University that is capable of slicing open tiny samples using a beam of high-energy ions only a nanometre wide. The analysis of the results suggested that natural processes in the desert environment could bring about the slow release of plutonium over a long period. This plutonium is likely to be absorbed by wildlife at Maralinga.
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