National Museum of Nuclear Science & History
Hannoch worked in the United States Engineer District Office.
Roger Hildebrand is an American physicist and Manhattan Project veteran. He is the S.K. Allison Distinguished Service Professor, Emeritus, at the University of Chicago and is affiliated with the Enrico Fermi Institute.
J. L. Flagg worked for the Watson-Flagg Engineering Company.
D. R. Johnson worked for the Roane-Anderson Company.
