National Museum of Nuclear Science & History
J. R. Simpson worked for the Edenfield Electric Company.
L. A. Castellanos worked for the J.A. Jones Construction Company.
Kenneth Peterson was a cryptographer for the 390th Air Service Group in the 509th Composite Group from September 1944 to November 1945.
John Arthur "Jack" Robinson was a machinist and instrument maker at the Clinton Engineering Works in Oak Ridge, Tennesse in 1943.