National Museum of Nuclear Science & History
M. V. Griscom worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Daniel J. Keefe was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Andrew Welch was a janitor at the Chicago Met Lab during the Manhattan Project.
W. L. Killibrew worked for the Roane-Anderson Company.
