National Museum of Nuclear Science & History
Charles Mayette worked for Hanley & Company.
Roy V. Henderson was a janitor at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
James Serduk was a staff worker at Los Alamos during the Manhattan Project.
C. M. Daws worked for the Edenfield Electric Company.
Grafton worked in the United States Engineer District Office.
