William E. Liebeck

A. O. Bedford

Frank Vaughan

Frank Vaughan was a research associate at the Chicago Met Lab during the Manhattan Project.

Sadelle T. Greenblatt

Sadelle T. Greenblatt was a research assistant in the Instruments Division of the University of Chicago’s Metallurgical Laboratory during the Manhattan Project.

John DoLong

John DoLong was a guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.