National Museum of Nuclear Science & History
W. A. Plumb worked for the United States Engineer District Office.
Joseph Ryan was a staff worker at Los Alamos during the Manhattan Project.
Britson worked at the 100-F Area at Hanford during the Manhattan Project.
Menges was an Area Engineer and Area Supervisor at the Hanford Engineer Works. He was in the US Navy (USNR) until June of 1943 when he was injured in an explosion on his destroyer.