Claim: The British nuclear tests at Maralinga, part of Operation Buffalo, included an air drop of a 3 kiloton Blue Danube on October 11, 1956.
Evidence: British nuclear tests at Maralinga were conducted between 1956 and 1963 at the Maralinga site, part of the Woomera Prohibited Area in South Australia about 800 kilometres (500 mi) north west of Adelaide. Air drop 3 kt Blue Danube 11 October 1956 05:57