National Museum of Nuclear Science & History
Elvin Olsen was a staff worker at Los Alamos during the Manhattan Project.
Libby worked in the 200 W Area at Hanford during the Manhattan Project.
C. J. Carrol worked for the Poe Piping & Heating Company.
Walter Groeger worked in the shop at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.