National Museum of Nuclear Science & History
McCall worked in the 100 F Area at Hanford during the Manhattan Project.
N. A. Powell worked for the Kellex Corporation at the K-25 Plant.
Clapp worked at the 300 Area at Hanford during the Manhattan Project.
H. L. Willey worked for the Edenfield Electric Company.
Robert Bennett worked for the Tennessee Eastman Corporation at the Y-12 Plant.