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 Heritage Foundation local communities, and other organizations to urge Congress to establish a Manhattan Project National Historical Park. In March 2013, Senators Maria Cantwell and Lamar Alexander introduced S. 507 to create a park, and Representatives Doc Hastings, Ben Ray Lujan, and Chuck Fleischmann introduced a companion bill in the House, H.R. 1208. The Los Alamos, V-Site was the site of assembly for the Trinity device, the first atomic weapon ever detonated. In October 2006, the AHF co-hosted several days of events to commemorate the successful restoration of the High Bay building. The Atomic Heritage Foundation has created several museum exhibits. They