National Museum of Nuclear Science & History
Olsen worked in the 200 East Area at Hanford during the Manhattan Project.
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.
Frank Watson worked for the Tennessee Eastman Corporation at the Y-12 Plant.
C. C. Wassom worked for the Roane-Anderson Company.