National Museum of Nuclear Science & History
T. F. Walsh worked for the United States Engineer District Office.
Ralph Steinhardt was a member of the Special Engineer Detatchment (SED) at Los Alamos during the Manhattan Project.
Kenneth Stewart Cole was a Principal Biophysicist at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Ryan worked at the 200 West Area at Hanford during the Manhattan Project.
J. B. Marcum worked for the Union Carbide & Carbon Corporation.
