National Museum of Nuclear Science & History
H. G. Kercher worked for the J.A. Jones Construction Company.
A. A. Uebelacker worked for the Edenfield Electric Company.
M. O. Swanson worked for the United States Engineer District Office.
Opaline Calhoun was a laboratory technician at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
