National Museum of Nuclear Science & History
J. P. Marus worked for the J.A. Jones Construction Company.
L. L. Kallestad worked for the United States Engineer District Office.
David L. Hill was an associate experimental physicist at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
R. A. Johnston worked for the United States Engineer District Office.
C. S. Hamer worked for the Roane-Anderson Company.
