National Museum of Nuclear Science & History
Butler worked at the 300 Area at Hanford during the Manhattan Project.
Colonel Franklin Matthias (1908 – 1993) was the officer-in-charge at the Hanford site. Matthias, a civil engineer, had been a close associate of General Groves since the beginning of the Manhattan Project, and was asked to review sites in the West.
Paul Baranowsky served in the Army group at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Robert J. Arnson served in the 1st Ordnance Squadron.
