National Museum of Nuclear Science & History
Chowning worked at the 200 East Area at Hanford during the Manhattan Project.
Alfred Hanson (1914-2005) was an American physicist. Alfred Hanson came to the Manhattan Project from the University of Wisconsin where he had recently completed his doctoral work, studying the Van de Graaf “long tank” accelerator.
Ed Helfenberger worked for the Roane-Anderson Company.
