National Museum of Nuclear Science & History
M. E. Gregson worked for the Roane-Anderson Company.
N. D. Barker worked for the Tennessee Eastman Corporation at the Y-12 Plant.
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.
McGruder worked for Stone and Webster Engineering Corporation.
