National Museum of Nuclear Science & History
R. O. Irwin worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Arnold Grubbe (1904-2002) was an engineer working for the civilian contractor Crane Company in Oak Ridge, Tennessee.
Edward J. Fredrick was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Leon Cole served in the 393rd Bombardment Squadron.
