National Museum of Nuclear Science & History
T. L. Harrigan worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Halm worked at the 300 Area at Hanford during the Manhattan Project.
Delbert Johnson was a mechanical engineer with the Special Engineer Detachment (SED) at Los Alamos. Johnson worked under 1st Lieutenant Howard C.
W. A. Gracey worked for the Roane-Anderson Company.
