National Museum of Nuclear Science & History
Frank Vaughan was a research associate at the Chicago Met Lab during the Manhattan Project.
J. P. Valliant worked for the Union Carbide & Carbon Corporation.
Samuel Beall Jr. is a nuclear engineer who worked on the Manhattan Project at Chicago, IL, Oak Ridge, TN, and Hanford, WA.
Madsen worked in the 100 D Area at Hanford during the Manhattan Project.
Attended New York University.