"A Quonset hut on the grounds of the Los Alamos National Lab in New Mexico where "Fat Man" was assembled in World War II. Fat Man was the nickname given to the atomic bomb dropped on Nagasaki, Japan, on Aug. 9, 1945. The hut would be part of a new Manhattan Project National Park."
Photo of the Atomic Scientists who conducted the first self-sustaining nuclear reaction. The reaction was conducted at the University of Chicago on December 2, 1942. Credit: Archival Photographic Files, apf3-00232, Special Collections Research Center, University of Chicago Library