National Museum of Nuclear Science & History
O'Brien worked for Stone and Webster Engineering Corporation.
S. W. Barnes worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Marilyn (Evans) Howe was a research assistant in the Technical Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Raymond Hamilton worked in the explosives research area at Los Alamos after a distinguished career with the US Army Coast Artillery Corps 705th Machine Gun Battery.