Nuclear explosion debris. The first man made nuclear explosion occurred on July 16, 1945 at 5:50 am on the Trinity Test Site near Alamogordo, New Mexico in the United States, an area now known as the White Sands Missile Range. The event involved the full-scale testing of an implosion-type fission atomic bomb. In a memorandum to the U.S. Secretary of War, General Leslie Groves describes the yield as equivalent to 15,000 to 20,000 tons of TNT. Following this test, a uranium-gun type nuclear bomb (Little Boy) was dropped on the Japanese city of Hiroshima on August 6, 1945, with a blast yield
Atomic Bomb Casualty Commission collected Despite their efforts, trust in the ABCC was declining, so the ABCC became the Radiation Effects Research Foundation (RERF), and with the new name and administrative organization, funding for the research on survivors was to be provided equally by the United States and Japan. The RERF was established on 1 April 1975. A binational organization run by both the United States and Japan, the RERF is still in operation today. Atomic Bomb Casualty Commission The Atomic Bomb Casualty Commission (ABCC) was a commission established in 1946 in accordance with a presidential directive from Harry S. Truman to the National