National Museum of Nuclear Science & History
C. E. Hauth worked for the Hooker Electrochemical Company.
Thomas R. Williams was a laborer at the University of Chicago’s Metallurgical Lab (“Met Lab”) during the Manhattan Project.
Frederick Trapnell was a consultant at the Metallurgical Laboratory in Chicago during the Manhattan Project.
W. C. Keettel worked for the United States Engineer District Office.
Caldwell worked at the 200 West Area at Hanford during the Manhattan Project.
