National Museum of Nuclear Science & History
J. R. Maddy worked for the United States Engineer District Office.
Alfred “Al” Zeltmann was a member of the Special Engineer Detatchment (SED) at Los Alamos during the Manhattan Project.
Cook worked at the 100-D Area at Hanford during the Manhattan Project.
W. W. Oshsner worked for the Roane-Anderson Company.
Nelson Tibbatts worked for the Tennessee Eastman Corporation at the Y-12 Plant.