24 items in this album on 2 pages.

Letter to president Roosevelt drafted by physicist Leó Szilárd with assistance from Edward Teller and Eugene Wigner and then signed by Albert Einstein urging the development of nuclear energy, 2 Aug 1939, page 1 of 2Letter to president Roosevelt drafted by physicist Leó Szilárd with assistance from Edward Teller and Eugene Wigner and then signed by Albert Einstein urging the development of nuclear energy, 2 Aug 1939, page 2 of 2Scientists of the S-1 project (Manhattan Committee) sharing a lighter moment as they discuss the feasibility of the 184-inch cyclotron at Berkeley, California, United States, 29 Mar 1940.A page out of a Manhattan Project scientist
Letter to president Roosevelt drafted by physicist Leó Szilárd with assistance from Edward Teller and Eugene Wigner and then signed by Albert Einstein urging the development of nuclear energy, 2 Aug 1939, page 1 of 2Letter to president Roosevelt drafted by physicist Leó Szilárd with assistance from Edward Teller and Eugene Wigner and then signed by Albert Einstein urging the development of nuclear energy, 2 Aug 1939, page 2 of 2Scientists of the S-1 project (Manhattan Committee) sharing a lighter moment as they discuss the feasibility of the 184-inch cyclotron at Berkeley, California, United States, 29 Mar 1940.A page out of a Manhattan Project scientist's notebook, noting the world's first controlled, self-sustaining nuclear chain reaction, achieved on 2 Dec 1942
Groves and Oppenheimer at Los Alamos, New Mexico, United States, 1940sAlpha Track Calutron at the Y-12 Plant at Oak Ridge, Tennessee, United States, 1944-1945Alpha Track Calutron diffusion vacuum pumps at the Y-12 Plant at Oak Ridge, Tennessee, United States, 1944-1945Control panels and operators for calutrons at the Y-12 Plant in Oak Ridge, Tennessee, United States; the woman closest to the camera was identified as Gladys Owens
Groves and Oppenheimer at Los Alamos, New Mexico, United States, 1940sAlpha Track Calutron at the Y-12 Plant at Oak Ridge, Tennessee, United States, 1944-1945Alpha Track Calutron diffusion vacuum pumps at the Y-12 Plant at Oak Ridge, Tennessee, United States, 1944-1945Control panels and operators for calutrons at the Y-12 Plant in Oak Ridge, Tennessee, United States; the woman closest to the camera was identified as Gladys Owens
Casings for the Scene of shift change at the Y-12 uranium enrichment facility in Oak Ridge, Tennessee, United States, circa 1945British personnel dismantling the experimental nuclear pile at Haigerloch near Stuttgart, Germany, Apr 1945Vannevar Bush, James B. Conant, Major General Leslie Groves and Colonel Franklin Matthias visiting the Hanford site for production of plutonium-239, Jul 1945, Benton County, Washington, United States.
Casings for the 'Thin Man' and 'Fat Man' atomic bomb designs, Muroc Army Air Field (later Edwards Air Force Base), California, United States, Mar 1944Scene of shift change at the Y-12 uranium enrichment facility in Oak Ridge, Tennessee, United States, circa 1945British personnel dismantling the experimental nuclear pile at Haigerloch near Stuttgart, Germany, Apr 1945Vannevar Bush, James B. Conant, Major General Leslie Groves and Colonel Franklin Matthias visiting the Hanford site for production of plutonium-239, Jul 1945, Benton County, Washington, United States.
Oppenheimer inspecting nuclear device Physicist Norris Bradbury (left) with atomic bomb Preparing the atomic bomb “The Gadget” atomic device on 15 Jul 1945 as it being readied for the Trinity Test the following day, Alamogordo, New Mexico, United States.
Oppenheimer inspecting nuclear device 'Gadget', Alamogordo, New Mexico, United States, mid-Jul 1945Physicist Norris Bradbury (left) with atomic bomb 'Gadget', 15 Jul 1945Preparing the atomic bomb 'Gadget' for Operation Trinity, 15 Jul 1945“The Gadget” atomic device on 15 Jul 1945 as it being readied for the Trinity Test the following day, Alamogordo, New Mexico, United States.
Atomic bomb Early stage of the nuclear explosion during Operation Trinity, 16 Jul 1945Early stage of the nuclear explosion during Operation Trinity, 16 Jul 1945, photo 2 of 2Aerial view of the aftermath of Operation Trinity, 17 Jul 1945; note the smaller crater on bottom right, which was the crater left by the 7 May 1945 test with 108 tons of TNT
Atomic bomb 'Gadget' exploding during Operation Trinity, 16 Jul 1945Early stage of the nuclear explosion during Operation Trinity, 16 Jul 1945Early stage of the nuclear explosion during Operation Trinity, 16 Jul 1945, photo 2 of 2Aerial view of the aftermath of Operation Trinity, 17 Jul 1945; note the smaller crater on bottom right, which was the crater left by the 7 May 1945 test with 108 tons of TNT

24 items in this album on 2 pages.

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