National Museum of Nuclear Science & History
J. H. Marsh worked for the Kellex Corporation at the K-25 Plant.
Crawford Greenewalt (1902-1993) was an American chemical engineer. He was one of the managers of the Manhattan Project for DuPont.
William P. Sheehan served in the 509th Headquarters.
Helen E. Krinek was a research assistant in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Attended Purdue University.