National Museum of Nuclear Science & History
D. D. Frazer worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Durfee worked for Stone and Webster Engineering Corporation.
John M. Sprecher was a chemical engineer. During the Manhattan Project, he worked for DuPont in Wilmington, DE.
Richard "Dick" Skancke was a security guard at Los Alamos during the Manhattan Project from late 1946 until late 1947.
J. C. Campbell worked for the Union Carbide & Carbon Corporation.