National Museum of Nuclear Science & History
MacDonald worked for Stone and Webster Engineering Corporation.
W. S. Herron worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Sieck worked at the 200 East Area at Hanford during the Manhattan Project.
Hector Morton served in the 1st Ordnance Squadron.
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.
