National Museum of Nuclear Science & History
Attended Iowa State University.
Sappenfield worked at the 300 Area at Hanford during the Manhattan Project.
John Klein was a member of the Special Engineering Detachment. He worked at the Metallurgical Lab at the University of Chicago and at Los Alamos.
N.F. Bowman was a consultant at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Arthur S. Opsahl served in the 603rd Air Engineering Squadron.