National Museum of Nuclear Science & History
Colonel Clifford Heflin was a decorated member of the Armed Forces, serving in the Air Force for 31 years.
Melvin A. Miller was a draftsman at the University of Chicago Met Lab. In 1946, he sketched two famous drawings of Chicago Pile-1 based on the descriptions of scientists who were present when it went critical.
Felix Sandoval was a staff worker at Los Alamos during the Manhattan Project.
Samuel Theodore Cohen was born on January 25, 1921. He was an American physicist and is known as the father of the neutron bomb.