National Museum of Nuclear Science & History
R. W. Llewellyn worked for the United States Engineer District Office.
J. Powell worked for the Union Carbide & Carbon Corporation.
James McGlennon served as a private first class in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Laggin’ Dragon.
T. J. O’Donnell was the Shop Chief at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.