National Museum of Nuclear Science & History
John M. Sprecher was a chemical engineer. During the Manhattan Project, he worked for DuPont in Wilmington, DE.
R. A. Wentworth worked for Clinton Laboratories at the X-10 Reactor.
A. H. Yohannan worked for the Roane-Anderson Company.
W. R. Perret worked for the Tennessee Eastman Corporation at the Y-12 Plant.
