National Museum of Nuclear Science & History
Matson worked in the 100 F Area at Hanford during the Manhattan Project.
C. R. Casparek worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Bretscher worked at Los Alamos during the Manhattan Project.
Daniel J. Keefe was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
