National Museum of Nuclear Science & History
J. M. Allen worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Wilcox P. Overbeck was a research associate and instrumentation designer at the Chicago Met Lab. He was responsible for calling out the neutron count when Chicago Pile-1 went critical on December 2, 1942.
Thomas R. Williams was a laborer at the University of Chicago’s Metallurgical Lab (“Met Lab”) during the Manhattan Project.
M. A. Obermeyer worked for the J.A. Jones Construction Company.