National Museum of Nuclear Science & History
M. R. Pierce worked for the Kellex Corporation at the K-25 Plant.
Hayes worked in the United States Engineer District Office.
Lionel Ames is an Army and Manhattan Project veteran, who worked at Los Alamos. His is also the brother of Maurice Shapiro, who was a Los Alamos scientist.
Harry Faulkner worked for the Tennessee Eastman Corporation at the Y-12 Plant.