National Museum of Nuclear Science & History
Ridley worked at the 300 Area at Hanford during the Manhattan Project.
Colonel Arthur “Pete” V. Peterson was the Army’s area engineer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
David Schauffler was a staff worker at Los Alamos during the Manhattan Project.
H. W. Caldwell worked for the Edenfield Electric Company.
