Joseph R. O’Bryan, Jr.

B. C. Regan

C. A. Gosline

Gosline worked at the 200 West Area at Hanford during the Manhattan Project.

R. Petyko

R. Petyko worked for the Roane-Anderson Company.

Stanley Krzyck

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