Lawrence L. Back

Roger Hultgren

Minnesota native Roger Hultgren worked for the DuPont Company as a chemist during the early 1940s, initally assigned to the Jolliet, Illinois munitions plans.

J. R. Mims

Rosie M. Hunter

Rosie M. Hunter was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

R. O. Ashworth

R. O. worked for Clinton Laboratories at the X-10 Reactor.