National Museum of Nuclear Science & History
H. A. Pritchard worked for the J.A. Jones Construction Company.
Jimmy Vale joined the Manhattan Project in 1943, where he helped operate calutrons as part of Ernest O.
Don Simpson worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Joseph H. Heartberg was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
