Harold A. Oldroyd Jr.

Irwin P. Wyskochil

Ruth Hillard

Ruth Hillard was a technician at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Ernest L. Beyer

Richard Skancke

Richard "Dick" Skancke was a security guard at Los Alamos during the Manhattan Project from late 1946 until late 1947.