Trident (UK nuclear programme) Agreement merged with the American Manhattan Project to create a combined American, British, and Canadian project. The British government expected that the United States would continue to share nuclear technology, which it regarded as a joint discovery, but the United States Atomic Energy Act of 1946 (McMahon Act) ended technical co-operation. Fearing a resurgence of United States isolationism, and Britain losing its great power status, the British government resumed its own development effort. The first British atomic bomb was tested in Operation Hurricane on 3 October 1952. The subsequent British development of the hydrogen bomb, and a fortuitous international relations
Agathe (atomic test) Agathe (atomic test) Agathe (aka Agate) was the name of the first French nuclear underground test. It was an atomic bomb detonated in the Hoggar mount (near In Ekker) of the then French Sahara desert on November 21, 1961, during the Algerian War (1954–62). Agathe was the first test of the jewel designation series running from 1961 until 1966. Minor and major incidents occurred during these experiments, the most important being the Beryl incident on May 1, 1962, where the nine militarymen of the "621ème Groupe d'Armes Spéciales" unit were heavily contaminated (600 mSv) as portrayed in the 2006 docudrama