Photos from the Trinity Nuclear Test, 1945

A portion of the Alamogordo Bombing Range was chosen as the site for the Trinity Test. This section of the test site was located at McDonald Ranch, which served as assembly headquarters for the atomic device. All of these temporary buildings were removed after the test.

Plutonium for the Trinity device is moved from the sedan that brought it to McDonald Ranch.

Norris Bradbury, group leader for bomb assembly, stands next to the partially assembled Gadget atop the test tower. Later, he became the director of Los Alamos, after the departure of Oppenheimer. Bradbury would serve as the director for several decades.

The famous mushroom cloud at 12 seconds after detonation.

"Jumbo" atomic device being positioned for "Trinity" test at Alamogordo, New Mexico.

"Trinity" explosion at Los Alamos, Alamogordo, New Mexico.