National Museum of Nuclear Science & History
John R. Leary Jr. was an American chemical engineer. He worked as a Shift Supervisor at the X-10 Plant, and as a research chemist in Building 205, at Oak Ridge.
Opal MacDonald was a stenographer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Ralph Shelley worked for the Tennessee Eastman Corporation at the Y-12 Plant.
