National Museum of Nuclear Science & History
H. E. Armstrong worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Gross worked at the 100-D Area at Hanford during the Manhattan Project.
George W. Marquardt served as a captain in the 393rd Bombardment Squadron. Although he was regularly assigned to the Up An’ Atom, he flew in the mission to bomb Hiroshima as the aircraft commander of the Necessary Evil.
