National Museum of Nuclear Science & History
Tracy worked for Stone and Webster Engineering Corporation.
Charles Maberry worked for the United States Engineer District Office.
John Arnold joined the Manhattan Project in 1943 when the MED tasked his employer, the Kellogg Corporation, with developing a special barrier for the gaseous diffusion plant in Oak Ridge.
Brewer worked at the 200 East Area at Hanford during the Manhattan Project.
Ole G. Landsverk was a member of the health physics team at the University of Chicago Metallurgical Laboratory during the Manhattan Project.
