National Museum of Nuclear Science & History
Jas Clayton worked for Clinton Laboratories at the X-10 Reactor.
Velva Irwin worked as a Calutron girl at the Y-12 Plant at Oak Ridge, TN. She was only 16 when she began working on the Manhattan Project.
Harry Stephon was a gruard and sergeant in the U.S. Army at the Metallurgical Laboratory in Chicago during the Manhattan Project.