National Museum of Nuclear Science & History
Seymour worked at the 200 West Area at Hanford during the Manhattan Project.
J. H. Schlosser worked for Clinton Laboratories at the X-10 Reactor.
Dorothy Schafer was a staff worker at Los Alamos during the Manhattan Project.
L. F. Mayer worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Mark Fred was a research assistant in the chemistry division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.