National Museum of Nuclear Science & History
Florence Roache worked for the United States Engineer District Office.
B. P. Gump worked for the Roane-Anderson Company.
Joseph Hans worked in the shop at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
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.