Tags: Government Agency.
The United States Atomic Energy Commission (AEC) was an agency of the United States government established after World War II by Congress to foster and control the peacetime development of atomic science and technology. President Harry S. Truman signed the McMahon/Atomic Energy Act on August 1 1946 transferring the control of atomic energy from military to civilian hands effective from January 1 1947. Public Law 585 79th Congress.