National Museum of Nuclear Science & History
W. J. Cruce worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Kreitzberger worked in the 200 East Area at Hanford during the Manhattan Project.
Elvin Olsen was a staff worker at Los Alamos during the Manhattan Project.
S. J. Butensky served in the 390th Air Service Group.
Seymour Calvert served for 11 months in the Special Engineering Detachment at Los Alamos. He specialized as a chemical engineer, and carried out experiments with beryllium that were often dangerous.
