National Museum of Nuclear Science & History
W. F. McDonald worked for the Tennessee Eastman Corporation at the Y-12 Plant.
S. A. Gilgon worked for the Roane-Anderson Company.
Fredrick “Fred” D. Johnson was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Weller worked at the 300 Area at Hanford during the Manhattan Project.