Manhattan Project
August 13, 1942 – January 1, 1947 · Los Alamos Laboratory, New Mexico
Secret United States research programme, with British and Canadian help, that developed the first nuclear weapons during World War II.
Key people
Participants
Battles and events 1
- Trinity nuclear test July 16, 1945
Before and after
- Led to
- Atomic bombings of Hiroshima and Nagasaki August 6–9, 1945
