National Museum of Nuclear Science & History
William Stephenson worked for the J.A. Jones Construction Company.
Hayden Rector was a contract attorney for the U.S. Army Corps of Engineers at Hanford, WA during the Manhattan Project.
George Maronde was a security guard at the University of Chicago Metallurgical Lab. He stood guard outside Stagg Field when Chicago Pile-1 went critical on December 2, 1942.
Abernathy worked in the United States Engineer District Office.
