To add to my response below, these tests were made by the
Australian Radiation Laboratory in 1973, being the Department of Health. Before this time, the responsibility radioactive fall-out was investigated from the Department of Science.
A 'final' report was produced in 1981, much of which I assume is classified, though the report concluded that radioactivity exposure "were safe and within recommended levels."
These conclusions were argued against during 1983, (mostly by the CSIRO biochemist Hedley Marston (around 1956) and his published book) leading to the detailed investigations of the British tests. the general history of radioactive waste in Australia is given at the Library of Australia's Parliamentary Library. (Sobering reading!!)
http://www.aph.gov.au/library/pubs/o...ctiveWaste.htm