National Museum of Nuclear Science & History
Dale Babcock was a physical chemist and colleague of Crawford Greenewalt. Greenewalt took Babcock and a few other close DuPont colleagues with him into the new world of atomic energy.
J. L. Ledgerwood worked for the Tennessee Eastman Corporation at the Y-12 Plant.
John H. Martens was a research associate and chemist at the University of Chicago Met Lab and a member of the Special Engineer Detachment at Oak Ridge.