National Museum of Nuclear Science & History
V. L. Looney worked for the United States Engineer District Office.
William H. Richardson served in the 320th Troop Carrier Squadron.
Otto Hillig was a Danish machinist who helped work on various projects in the early days of the Manhattan Project.
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.
L. V. Withers worked for the Roane-Anderson Company.