National Museum of Nuclear Science & History
A. H. Caldwell worked for the G.G. Ray Company.
C. L. Quast worked for the Kellex Corporation at the K-25 Plant.
Hilda Holzman worked for the United States Engineer District Office.
John Mihalkanin was a laboratory helper at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Raymond Taylor was a member of the Special Engineer Detatchment (SED) at Los Alamos during the Manhattan Project.
