More than 100 kg of highly toxic uranium (U) and plutonium (Pu) was dispersed in the form of tiny ‘hot’ radioactive particles after the British detonated nine atomic bombs in remote areas of South Australia, including Maralinga.
Scientists say that these radioactive particles persist in soils to this day, more than 60 years after the detonations. Previously, we had limited understanding of how Pu was released from these “hot” particles into the environment for uptake by wildlife around Maralinga.
But now, a new study published today in Scientific Reports and led by Monash University researchers warns that the particles are actually more complex and varied than previously thought. This means that the processes which slowly release Pu into the environment are also much more complex and varied.
“The British detonated nine nuclear bombs and conducted hundreds of nuclear tests in outback South Australia between 1953 and 1963,” said lead study author Megan Cook, a PhD student from the Monash University School of Earth, Atmosphere and Environment. “The resulting radioactive contamination and cover-up continues to haunt us.”
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Image via Monash University
