National Museum of Nuclear Science & History
J. M. Ryan worked for the United States Engineer District Office.
Glenn M. Taeger served in the 1027th Air Material Squadron.
Frederick D. Clayton served as a staff sergeant in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Bockscar.
David L. Hill was an associate experimental physicist at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.