Kenneth C. Brown

Irvin Mastin

Irvin Mastin worked for the J.A. Jones Construction Company.

D. M. Black

D. M. Black worked for Clinton Laboratories at the X-10 Reactor.

Joseph Getzholtz

Joseph Getzholtz worked in the shop at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Leo C. Dallege