National Museum of Nuclear Science & History
Ed Helfenberger worked for the Roane-Anderson Company.
Iver Samuelson worked for the Tennessee Eastman Corporation at the Y-12 Plant.
John Deal worked for the Kellex Corporation at the K-25 Plant.
Underwood worked at the 200 West Area at Hanford during the Manhattan Project.
Reed worked at the 100-F area at Hanford during the Manhattan Project.
