Correct Richo your go
Operation Buffalo commenced on 27 September 1956. The operation consisted of the testing of four nuclear devices, codenamed One Tree, Marcoo, Kite and Breakaway respectively. One Tree (12.9 kilotonnes of TNT (54 TJ)) and Breakaway (10.8 kilotonnes of TNT (45 TJ)) were exploded from towers, Marcoo (1.4 kilotonnes of TNT (5.9 TJ)) was exploded at ground level, and Kite (2.9 kilotonnes of TNT (12 TJ)) was released by a Royal Air Force Vickers Valiant bomber from a height of 35,000 feet (11,000 m). This was the first launching of a British atomic weapon from an aircraft.
The fallout from these tests was measured using sticky paper, air sampling devices, and water sampled from rainfall and reservoirs. The radioactive cloud from Buffalo 1 (One Tree) reached a height of 37,500 ft (11,400 m), exceeding the predicted 27,900 ft (8,500 m), and radioactivity was detected in South Australia, Northern Territory, New South Wales, and Queensland. All four Buffalo tests were criticised by the 1985 McClelland Royal Commission, which concluded that they were fired under inappropriate conditions.
In 2001, Dr Sue Rabbit Roff, a researcher from the University of Dundee, uncovered documentary evidence that troops had been ordered to run, walk and crawl across areas contaminated by the Buffalo tests in the days immediately following the detonations a fact that the British government later admitted. Dr Roff stated that "it puts the lie to the British government's claim that they never used humans for guinea pig-type experiments in nuclear weapons trials in Australia.