The Manhattan Project: Making The Atomic Bomb -
The project was spread across clandestine "secret cities" in the United States. The Manhattan Project - Department of Energy
While not a project member, his 1939 letter to President Roosevelt warning of German nuclear potential served as the project’s initial catalyst. 2. Major Research and Production Sites The Manhattan Project: Making the Atomic Bomb
The "hard-driving" director of the project from the U.S. Army Corps of Engineers who oversaw all construction and security. The project was spread across clandestine "secret cities"