British nuclear tests at Maralinga
Overview
 
British nuclear tests at Maralinga occurred between 1955 and 1963 at the Maralinga
Maralinga, South Australia
Maralinga, South Australia in the remote western areas of South Australia was the home of the Maralinga Tjarutja, a southern Pitjantjatjara Indigenous Australian people. Maralinga was the site of the secret British nuclear tests in the 1950s. The site measures about 3,300 km² in area...

 site, part of the Woomera Prohibited Area, in South Australia
South Australia
South Australia is a state of Australia in the southern central part of the country. It covers some of the most arid parts of the continent; with a total land area of , it is the fourth largest of Australia's six states and two territories.South Australia shares borders with all of the mainland...

. A total of seven major nuclear tests
Nuclear testing
Nuclear weapons tests are experiments carried out to determine the effectiveness, yield and explosive capability of nuclear weapons. Throughout the twentieth century, most nations that have developed nuclear weapons have tested them...

 were performed, with approximate yields
Nuclear weapon yield
The explosive yield of a nuclear weapon is the amount of energy discharged when a nuclear weapon is detonated, expressed usually in the equivalent mass of trinitrotoluene , either in kilotons or megatons , but sometimes also in terajoules...

 ranging from 1 to 27 kilotons of TNT equivalent. The site was also used for hundreds of minor trials, many of which were intended to investigate the effects of fire or non-nuclear explosions on atomic weapons.

The site was contaminated with radioactive materials
Radioactive waste
Radioactive wastes are wastes that contain radioactive material. Radioactive wastes are usually by-products of nuclear power generation and other applications of nuclear fission or nuclear technology, such as research and medicine...

 and an initial cleanup was attempted in 1967.
 
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