J. F. Bowling

Donaciano Gonzales

Stanley Krzyck

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

Leo J. Zbanek

Leo Zbanek worked for the United States Engineer District Office.

Andrew J. Welch

Andrew Welch was a janitor at the Chicago Met Lab during the Manhattan Project.