D. H. Abbott

Francis Bernard Donlan

Francis Bernard “Bernie” Donlan was an American photographer and a clerk at the Chicago Met Lab during the Manhattan Project.

Kenneth Pumphrey

Ken Pumphrey joined the Manhattan Project at Los Alamos in 1946, where he worked as a security guard until 1948.

H. E. Walton

S. J. Helfman

S. J. Helfman worked for the J.A. Jones Construction Company.