National Museum of Nuclear Science & History
John Horan worked for the United States Engineer District Office.
Vanstrum began working on the Manhattan Project soon after receiving his engineering degree from the University of Minnesota.
Tappscott worked at the 100-F Area at Hanford during the Manhattan Project.
Zellers worked at the 300 Area at Hanford during the Manhattan Project.
F. I. Irwin worked for the Tennessee Eastman Corporation at the Y-12 Plant.
