Biden admin says US wrongly revoked Oppenheimer's security clearance in 1954
Oppenheimer, a theoretical physicist, headed the top secret Los Alamos Laboratory, which was established under President Franklin Roosevelt as home of the Manhattan Project.
The mushroom cloud of the first test of a hydrogen bomb, "Ivy Mike", as photographed on Enewetak, an atoll in the Pacific Ocean, in 1952, by a member of the United States Air Force's Lookout Mountain.(photo credit: Photographic Squadron/File Photo)ByREUTERS
