National Museum of Nuclear Science & History
Clay Cross worked for the Roane-Anderson Company.
Robert Lyste Thornton was a Canadian-American physicist who oversaw the constuction and operation of the Beta calutron electromagnetic separation Plant in Oak Ridge, Tennessee during the Manhattan Project.
Matthei worked for Stone and Webster Engineering Corporation.
Jack Widowsky served as a second lieutenant in the 393rd Bombardment Squadron. He was regularly assigned to the B-29 Top Secret.