Before and After Operation Doorstep
Mannequin Family in a House at Operation Doorstep, 7,500 Feet from the Blast, before the Blast, 03/17/1953
Mannequin Family in a House at Operation Doorstep, 7,500 Feet from the Blast, after the Blast, 03/17/1953
(see also "Operation Cue" conducted in May of 1955.)
"Navy photographer pictures suffering and ruins that resulted from atom bomb blast in Hiroshima, Japan. Japanese soldier walks through leveled area., 09/1945"
Wayne Miller, photographer. From the General Photographic File of the Department of the Navy.
Letter received from General Thomas Handy to General Carl Spaatz authorizing the dropping of the first atomic bomb, 07/25/1945
Operation Cue - May 5, 1955
Part of the overall “Operation Teapot” series of nuclear test explosions in Nevada, Operation Cue was a civil defense exercise to intended to observe the effects of nuclear weapons on a civilian infrastructure, including the construction of test houses populated with mannequins.
Photographs of Operation Cue from the Records of the Office of Civil and Defense Mobilization, 1947 - 1962
The Hanford Site was first proposed as a nuclear production facility 70 years ago this month in December 1942:
Seventy years ago during World War II, the Hanford Engineering Works was built as part of the Manhattan Project, becoming the first full-scale plutonium enrichment facility in the world.
Its plutonium was used for the test of the world’s first atomic bomb at the Trinity Site at Los Alamos, NM, and the bomb detonated over Nagasaki, Japan.
Over the next six weeks, the National Archives at Seattle will be posting formerly classified images of life in this unique community during a crucial era in Washington State and American history.
Today’s images were posted on their Facebook page.
Source: Hanford Photographic Negatives, 1943-1945; DuPont Collection; Records of the Department of Energy (RG 434), National Archives.
On August 6, 1945 the United Stated dropped an atomic bomb on Hiroshima, Japan. These two mosaics of aerial photographs show Hiroshima before and after.
Top: Pre-attack mosaic view of Hiroshima, Japan, 04/13/1945
Bottom: Post-attack mosaic view of Hiroshima, Japan, 08/11/1945
At the time this photo was made, smoke billowed 20,000 feet above Hiroshima while smoke from the burst of the first atomic bomb had spread over 10,000 feet on the target at the base of the rising column.Two planes of the 509th Composite Group, part of the 313th Wing of the 20th Air Force, participated in this mission, one to carry the bomb, the other to act as escort, 08/06/1945
In this once secret letter to President Harry S. Truman dated April 24, 1945, Secretary of War Henry Stimson requested an urgent meeting to discuss the Manhattan Project, the all-out effort by the Federal Government to build an atomic bomb during World War II.
The controversial trial of Julius and Ethel Rosenberg concluded on March 29, 1951 with their conviction of espionage for passing atomic bomb secrets to Soviet agents. Both were ultimately executed on June 18, 1953.
Among the exhibits introduced at their trial was a Jell-O box, specially cut into matching pieces to be used by the spies to confirm their identities. It was not the original box, but “trial transcript shows that the prosecution introduced this facsimile Jell-O box to represent the recognition signal.”
August 8, 1950 - Ethel Rosenberg Arrest Photographs
Notes by Harry S. Truman on the Potsdam Conference, July 17, 1945
On July 17, 1945, two months after Germany surrendered to the Allies at the end of World War II, President Harry S. Truman came face to face with Marshal Joseph Stalin of the Soviet Union, one of the most brutal autocrats of all time, a meeting recounted in this page from Truman’s diary. The night before this meeting, Truman learned that the United States had successfully tested the world’s first atomic bomb, which may explain his diary’s cryptic reference to “dynamite.”
This is a typewritten account of the detonation of “Trinity,” the first atomic device, on July 16, 1945, written by physicist Luis W. Alvarez, who witnessed it from a B-29 aircraft flying 24,000 feet over the site. In this report, Alvarez comments upon the detonation itself, the formation of the mushroom cloud, and the observations of the shock wave by the pilot and other passengers in the aircraft.