National Museum of Nuclear Science & History
H. R. Kroegar worked for the Tennessee Eastman Corporation at the Y-12 Plant.
J. M. Dawson worked at the 300 Area at Hanford during the Manhattan Project.
Minnie (Heller) Steinberg was a junior biologist in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Hirst worked at the 100-D Area at Hanford during the Manhattan Project.
John P. Echert served in the 393rd Bombardment Squadron.
