National Museum of Nuclear Science & History
Manning worked for Stone and Webster Engineering Corporation.
Sievers worked at the 300 Area at Hanford during the Manhattan Project.
William O. Collins served in the 509th Headquarters and Base Services Squadron.
Homer M. O’Callaghan served in the 1st Ordnance Squadron.
C. P. Vogel worked for the Tennessee Eastman Corporation at the Y-12 Plant.
