National Museum of Nuclear Science & History
William Gray worked for the Roane-Anderson Company.
Helen Schneider was a staff worker at Los Alamos during the Manhattan Project.
James Barton worked as a carpenter for the DuPont Company at the Hanford, Washington site. He never knew he was working on the atomic bomb until after it was dropped in Japan.
R. L. Flanary worked for the Tennessee Eastman Corporation at the Y-12 Plant.