National Museum of Nuclear Science & History
Helgeson worked at the 300 Area at Hanford during the Manhattan Project.
Robert Pierce served in the Special Engineer Detatchment (SED) at Los Alamos during the Manhattan Project.
J. O. Parks worked for the Tennessee Eastman Corporation at the Y-12 Plant.
In the 1944 Hanford Phone Book, he is listed under R. C. Theil. In the 1945 Hanford Phone Book, he is listed under R.
