Timeline

December 1938 Nuclear Fission demonstrated
				August 2, 1938 Einstein writes a letter to Roosevelt
August 1942 Manhattan Engineer District is formed, goal is to build an atomic bomb within three years
				September 17, 1942 Col. Groves becomes military leader of Manhattan Project
July 16, 1945 First atomic test, called "Trinity"
				August 6, 1945 First atomic bomb is dropped on Hiroshima