History
History
This section provides an overview of the history of the Manhattan Project, the key organizations involved, the science behind the bomb, and more.
Japanese Balloon Bombs "Fu-Go"
On November 3, 1944, Japan released fusen bakudan, or balloon bombs, into the Pacific jet stream. Japan’s latest weapon, the balloon bombs were intended to cause damage and spread panic in the continental United States.
Japanese Mass Suicides
The War of the Pacific against Imperial Japan was marked by episodes of mass suicides by Japanese soldiers and civilians, notably in Saipan and Okinawa.
Jumbo
Jumbo was designed by Los Alamos lab to act as a failsafe device for the Trinity test explosion.
Leo Szilard's Fight to Stop the Bomb
Hungarian-American physicist Leo Szilard's petition sought to avert use of the atomic bombs against Japan.
Limited or Partial Test Ban Treaty (LTBT/PTBT)
The Limited Test Ban Treaty (LTBT), also known as the Partial Test Ban Treaty (PTBT), is an arms control agreement intended to restrict the testing of nuclear weapons and limit nuclear proliferation.
Little Boy and Fat Man
Technical description, photographs, and video of atomic bombs Little Boy and Fat Man dropped on Hiroshima and Nagasaki in August 1945.
Los Alamos Before World War II
The Pajarito Plateau has been home to a number of inhabitants who have each uniquely shaped the landscape and history of the area.
Mail Censorship
Mail censorship was a crucial aspect of the secrecy of the Manhattan Project. Individuals at Los Alamos remember situations where mail censorship disrupted their lives.