Operation Grapple with the American Manhattan Project in August 1943. Many of Britain's top scientists participated in the British contribution to the Manhattan Project. After the war, fearing that Britain would lose its great power status, the British government resumed the atomic bomb development effort, now codenamed High Explosive Research. The successful test of an atomic bomb in Operation Hurricane in October 1952 represented an extraordinary scientific and technological achievement, but Britain was still several years behind the United States in nuclear weapons technology. In July 1954, the Cabinet decided to develop the hydrogen bomb. The United Kingdom Atomic Energy Authority Atomic
Atomic veteran represented by Association Moruroa E Tatou. The organisation has been critical of the French government's initial denial of harm, and limited commitment to compensation to total value of $13.5 million. The president of Association Moruroa E Tatou estimates that between 15,000 and 30,000 people worked on the test program, but the official number remains a national secret. Australian servicemen supported British nuclear weapons test programs at Emu Field, Maralinga, the Montebello Islands and Christmas Island during period 1952-1963. Associations representing Australian atomic veterans include the Australian Nuclear Veterans Association. and the Australian Ex-Servicemen Atomic Survivors Association. The Clarke Review of