National Museum of Nuclear Science & History
Porter worked in the 200 East and West Areas at Hanford during the Manhattan Project.
Daniel D. Friel was a chemical engineer for the DuPont Company who joined the Manhattan Project at the University of Chicago in 1943.
Breyer worked in the United States Engineer District Office.
Marshall worked in the 100 D Area at Hanford during the Manhattan Project.
S. M. MacNeille worked for the Tennessee Eastman Corporation at the Y-12 Plant.