National Museum of Nuclear Science & History
Helgeson worked at the 300 Area at Hanford during the Manhattan Project.
W. A. Anderson worked for the Union Carbide & Carbon Corporation.
Robert E. Johnson was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
C. P. Vogel worked for the Tennessee Eastman Corporation at the Y-12 Plant.
