National Museum of Nuclear Science & History
Zen B. Portwood worked for the J.A. Jones Construction Company.
A. M. Koerner worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Robert Sturgess was a staff worker at Los Alamos during the Manhattan Project.
John Mihalkanin was a laboratory helper at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
