History of the United States 6–3 decision in Korematsu v. United States Supreme Court case. Research and development took flight as well, best seen in the Manhattan Project, a secret effort to harness nuclear fission to produce highly destructive atomic bombs. From 1942 to 1946, the project was under the direction of Major General Leslie Groves of the U.S. Army Corps of Engineers. Nuclear physicist J. Robert Oppenheimer was the director of the Los Alamos Laboratory that designed the actual bombs. The first nuclear device ever detonated was an implosion-type bomb at the Trinity test, conducted at New Mexico's Alamogordo Bombing and Gunnery Range on
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.