National Museum of Nuclear Science & History
Madsen worked in the 100 D Area at Hanford during the Manhattan Project.
John Roberts was a staff worker at Los Alamos during the Manhattan Project.
Nora Dene Lawson worked as a calutron operator at the Y-12 Separations Plant in Oak Ridge, TN during the Manhattan Project.
M. J. Wheat worked for the Midwest Piping and Supply Company.
R. M. Batch worked for the Tennessee Eastman Corporation at the Y-12 Plant.