National Museum of Nuclear Science & History
Graf worked at the 300 Area at Hanford during the Manhattan Project.
L. M. Richards was President of the Atlantic Richfield Hanford Company, which took over chemical processing operations at Hanford in 1967.
Lester Orlan Keen worked as an engineering draftsman at Hanford during the Manhattan Project. His son, Jack Keen, was a young boy at the time.
