National Museum of Nuclear Science & History
Joseph Kouba was a janitor at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
E. Lander worked for the Roane-Anderson Company.
Douglas Meigs was a civilian chemical engineer working for H. K. Ferguson, the company that built and operated the S-50 Thermal Diffusion facility at Oak Ridge.
Caddell worked for Stone and Webster Engineering Corporation.