National Museum of Nuclear Science & History
R. Y. Blackwell worked for the Fercleve Corporation.
Herbert G. “Mac” MacPherson (1911-1993) was an American nuclear engineer. MacPherson’s expertise on graphite made him a valuable consultant for the Manhattan Project.
William (W.) Gregory Marley was a British physicist and photography expert, who was part of the British Mission to Los Alamos during the Manhattan Project.
Dorothy Isgett worked for the Tennessee Eastman Corporation at the Y-12 Plant.