National Museum of Nuclear Science & History
Wayne Dappen worked for the Tennessee Eastman Corporation at the Y-12 Plant.
O. T. Sibert worked for Clinton Laboratories at the X-10 Reactor.
Johnson worked at the 100-F Area at Hanford during the Manhattan Project.
Alfred Pfanstiehl was a junior physicist at the Chicago Met Lab during the Manhattan Project. Pfanstiehl was a signatory of the Szilard Petition, an attempt to avert military use of the atomic bomb against Japan.
Twichell worked at 200 West Area at Hanford during the Manhattan Project.
