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
Nagasaki Atomic Bomb Museum Pacific War". It is there that the experience of militarism in Japan and the demands of war are juxtaposed with arguments for the end of nuclear weapons. Visitors are presented with facts on modern nuclear weapons alongside facts related to victims of the atomic bombing. It is a call for peace and an end of the nuclear age. The final room in the museum contains videos and documents related to the Nagasaki bombing. Visitors can also find answers to their questions and documents like Nagasaki’s Peace Declaration. The museum exhibits objects that were exposed to radiation from the atomic bomb.