National Museum of Nuclear Science & History
J. H. Marsh worked for the Kellex Corporation at the K-25 Plant.
F. L. Hopkins worked for the Tennessee Eastman Corporation at the Y-12 Plant.
W. H. Grahm worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Delbert Johnson was a mechanical engineer with the Special Engineer Detachment (SED) at Los Alamos. Johnson worked under 1st Lieutenant Howard C.
