National Museum of Nuclear Science & History
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.
Melvin Bengston was a security guard at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Calhoun worked at the 100-B Area at Hanford during the Manhattan Project.
