National Museum of Nuclear Science & History
Olga Nelson was a staff worker at Los Alamos during the Manhattan Project.
Emos E. Maddux served in the 1st Ordnance Squadron.
Peter Watkins was a member of the Special Engineer Detatchment (SED) at Los Alamos during the Manhattan Project.
Joseph H. Heartberg was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
