National Museum of Nuclear Science & History
O'Brien worked for Stone and Webster Engineering Corporation.
Norman Goldstein was a junior physicist at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Donald W. Palmer served in the 320th Troop Carrier Squadron.
Jose Romero was a staff worker at Los Alamos during the Manhattan Project.
Leon O. (Tom) Morgan was an American chemist who worked on the Manhattan Project and co-discovered the element Americium.