National Museum of Nuclear Science & History
M. G. Mastin worked for the Fercleve Corporation.
Joseph H. Cummins served in the 320th Troop Carrier Squadron.
J. M. Holliday worked for the J.A. Jones Construction Company.
John Tempka (1923-2017) was an American engineer. Tempka was born in Boydsville, Ohio. He was studying at the University of Detroit when he was recruited to join the U.
Keith Coleman worked for the Tennessee Eastman Corporation at the Y-12 Plant.
