National Museum of Nuclear Science & History
T. J. O’Donnell was the Shop Chief at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
B. P. Ciaccio served in the 509th Headquarters and Base Services Squadron.
Helena Calloway was a laboratory assistant in the Chemistry Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Ralph Moorehead served in the 603rd Air Engineering Squadron.
