National Museum of Nuclear Science & History
Matthew Sands (1919-2014) was an American physicist. In 1943, Matthew Sands began working for the Naval Ordnance Laboratory and developed two types of influence mines before being disillusioned by the bureaucracy of the navy.
Ethel Schwartz arrived as a bride with her husband, Manuel Schwartz, at Los Alamos in 1944. She worked in the office until she became pregnant with her son, Joel Schwartz, who was born there after the bombs were dropped on August 6, 1945.