National Museum of Nuclear Science & History
Audrey Smythe worked for the Union Carbide & Carbon Corporation.
Gerhardt Padalski was a staff worker at Los Alamos during the Manhattan Project.
Earl Painter served in the 320th Troop Carrier Squadron.
Nelen Supert was a stenographer at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Edgar Sengier (1879 – 1963) was the director of Union Miniere du Haut Katanga. After being warned by British scientists regarding the potential danger were the uranium ore to fall into the wrong hands, Sengier decided to transport half the uranium stockpile from the Congo to the United States in 1940.