National Museum of Nuclear Science & History
A. W. Groce worked for the Edenfield Electric Company.
Sappenfield worked at the 300 Area at Hanford during the Manhattan Project.
Dennis Dwyer was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
T. R. Young worked for the Tennessee Eastman Corporation at the Y-12 Plant.
W. T. Simpson worked for the Roane-Anderson Company.
