Initial designs for the Blue Danube warhead were based on research derived from Hurricane , the first British fission device ( which was not designed nor employed as a weapon ) , tested in 1952 . The actual Blue Danube warhead was proof-tested at the '' Marcoo '' ( surface ) and '' Kite '' ( air-drop ) nuclear trials sites in Maralinga , Australia , by a team of Australian , British and Canadian scientists in late 1956
Hurricane
Operation Hurricane
Blue Danube (nuclear weapon)