National Museum of Nuclear Science & History
Joseph Murray was a staff worker at Los Alamos during the Manhattan Project.
Geoghegan worked at the 300 Area at Hanford during the Manhattan Project.
Elmer C. Sekeres served in the 393rd Bombardment Squadron.
Kopanski worked at the 200 East Area at Hanford during the Manhattan Project.
Joseph Caldwell was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
