National Museum of Nuclear Science & History
Dodson Marrs worked in carpentry and concrete work at Oak Ridge, Tennessee as a part of the Manhattan Project.
Alexander Klementiev was born in Moscow in 1942 and grew up in the Soviet Union during the Cold War. As a student, he attended the Moscow Institute of Physics and Technology, where he studied radio physics and earned his Ph.
Sanford McDonnell was a mechanical engineer with the Special Engineering Detachment at Los Alamos from April 1944 to April 1946.