National Museum of Nuclear Science & History
Carrie Johnson was a laboratory assistant in the Chemistry Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Leonard Harvey served in the 1027th Air Material Squadron.
Ambroso Hoelscher was a laboratory assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
A. J. MacDonald worked for the Union Carbide & Carbon Corporation.