National Museum of Nuclear Science & History
H. R. Koonce worked for the J.A. Jones Construction Company.
Charles Hensley worked for the United States Engineer District Office.
Alfred Pfanstiehl was a junior physicist at the Chicago Met Lab during the Manhattan Project. Pfanstiehl was a signatory of the Szilard Petition, an attempt to avert military use of the atomic bomb against Japan.
G. E. Knutson worked for the United States Engineer District Office.
