National Museum of Nuclear Science & History
Sanford worked at the 300 Area at Hanford during the Manhattan Project.
Hennie Schallis was a staff worker at Los Alamos during the Manhattan Project.
A. T. Helgerson worked for the Tennessee Eastman Corporation at the Y-12 Plant.
C. E. Twigg worked for the Tennessee Eastman Corporation at the Y-12 Plant.