National Museum of Nuclear Science & History
H. O. Norman worked for the Edenfield Electric Company.
H. A. Pritchard worked for the J.A. Jones Construction Company.
Ed Helfenberger worked for the Roane-Anderson Company.
C. E. Stone worked for Clinton Laboratories at the X-10 Reactor.
Mark Fred was a research assistant in the chemistry division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
