National Museum of Nuclear Science & History
Delbert Johnson was a mechanical engineer with the Special Engineer Detachment (SED) at Los Alamos. Johnson worked under 1st Lieutenant Howard C.
Gordon worked in the United States Engineer District Office.
Lise Meitner (1878-1968) was an Austrian physicist. Meitner was part of the team that discovered and explained nuclear fission and foresaw its explosive potential.
Seager worked for Stone and Webster Engineering Corporation.