National Museum of Nuclear Science & History
R. R. Manganielo served in the 509th Headquarters and Base Services Squadron.
T. O’Rouark worked for the United States Engineer District Office.
R. D. Evans worked at the 200 West Area at Hanford during the Manhattan Project.
Larrie Arnold worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Clarence H. Mathews was a janitor at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.