National Museum of Nuclear Science & History
Don Simpson worked for the Tennessee Eastman Corporation at the Y-12 Plant.
White worked at the 200 West Area at Hanford during the Manhattan Project.
Jack L. Callan was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Seymour S. Katz served in the 603rd Air Engineering Squadron.
Marguerite Swift was an associate physiologist in the Health Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.
