National Museum of Nuclear Science & History
Betty Utterback was a staff worker at Los Alamos during the Manhattan Project.
Lomie F. Caho was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Helena Calloway was a laboratory assistant in the Chemistry Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Gordon W. Mills served in the 1st Ordnance Squadron.
