National Museum of Nuclear Science & History
Hallie Perry was an electrician at Oak Ridge, Tennessee for the Watson-Flagg Engineering Company from 1943 to 1945.
T. W. Hungerford, Jr. worked for Clinton Laboratories at the X-10 Reactor.
Morris S. Kaplan was a Chemical Engineer for the Houdaille-Hershey Company in Decatur, Illinois. Kaplan was born in Massachusetts in 1921 and grew up in Chicago, Illinois.