National Museum of Nuclear Science & History
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.
Julia Mangan worked for the A. S. Schulman Electric Company.
Johnson worked at the 100-B Area at Hanford during the Manhattan Project.
