The British nuclear tests at Maralinga, part of Operation Buffalo, initially scheduled for April and May 1956, included an air drop of a 3 kiloton Blue Danube on October 11, 1956.
Two major test series were conducted at the Maralinga site: Operation Buffalo in 1956 and Operation Antler the following year. It was initially scheduled for April and May 1956, but was pushed back to September and October, when meteorological conditions were most favourable. Blue Danube 3 kt 11 October 1956 05:57 
