Francis E. Elder

Dennis Dwyer

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

M. M. Workman

C. A. Nichols

C. A. Nichols worked for the Roane-Anderson Company.

N. C. Poe, Jr.

N. C. Poe, Jr. worked for the Poe Piping & Heating Company.