John G. Peters

D. L. Williams

Mary A. Thomas

Mary Thomas worked for the J.A. Jones Construction Company.

George Cowan

George Cowan joined the Manhattan Project in 1942 at the Met Lab as a chemist for Enrico Fermi’s group, and also worked for Columbia University.

Thomas H. Cowley

Thomas Cowley was a Military Policeman assigned to Post Security at Los Alamos, New Mexico during the Manhattan Project.