National Museum of Nuclear Science & History
A. J. MacDonald worked for the Union Carbide & Carbon Corporation.
William Scivally was a staff worker at Los Alamos during the Manhattan Project.
Thaddeus J. Seweryniak served in the First Ordnance Squadron.
Henry J. Wollweber was a guard at the University of Chicago’s Metallurgical Lab (“Met Lab”) during the Manhattan Project.