Revocation of Oppenheimer's Security Clearance

Date: May 27, 1954 • Location: Los Alamos, United States

The security clearance of American nuclear physicist J. Robert Oppenheimer, head of Project Y, was revoked.

J. Robert Oppenheimer was an American theoretical physicist who served as the director of the Manhattan Project's Los Alamos Laboratory during World War II. He is often called the "Father of the Atomic Bomb" for his role in overseeing the development of the first nuclear weapons.