National Museum of Nuclear Science & History
A. O. Seidel worked for the Asbestos & Magnesia Materials Company.
Lester W. Mingin served in the 1st Ordnance Squadron.
R. L. Thornton worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Margaret Brown was a stenographer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
