National Museum of Nuclear Science & History
N. C. Parrish worked for the United States Engineer District Office.
Stephen Kasunic was a mechanical engineer. He worked on the Manhattan Project at Los Alamos, as a design engineer in the Weapons Experimental Experimental Physics (W-1) group on the steering committee for the gun-type bomb assembly.
Helgeson worked at the 300 Area at Hanford during the Manhattan Project.
