National Museum of Nuclear Science & History
E. S. Ethridge worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Peter T. Harris served in the 393rd Bombardment Squadron.
W. Q. Smith worked for Clinton Laboratories at the X-10 Reactor.
Andrew H. MacMahon was the Chief Property Officer of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.