National Museum of Nuclear Science & History
Appears in the 1944 Hanford Telephone Directory as “Petersen” and the 1945 Directory as “Peterson”.
Charles Crichfield worked as an elctrician in Oak Ridge, Tennessee from 1943 to September 1945. Crichfield's brother Paul and father P.
Okey B. Ellison was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
