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
Leslie H. Martin off the coast of Western Australia in October 1952, and then for Operation Totem tests at Emu Field in South Australia in October 1953. When the British government established the Maralinga Test Range in 1953, the Australian government created the Maralinga Safety Committee, which became the Atomic Weapons Test Safety Committee, with Martin as its chairman. As such he was responsible for safety of the Operation Mosaic tests at Monte Bello in May and June 1956, and Operation Buffalo tests at Maralinga in September and October 1956, after which he handed over the chairmanship to Ernest Titterton. An advocate for