D. W. Clark

R. S. Hammond

Helena Calloway

Helena Calloway was a laboratory assistant in the Chemistry Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

C. E. Stone

C. E. Stone worked for Clinton Laboratories at the X-10 Reactor.

Edward J. Denari

Edward Denari worked for the Kellex Corporation at the K-25 Plant.