National Museum of Nuclear Science & History
Johnson worked at the 100-F Area at Hanford during the Manhattan Project.
Ledbetter worked in the 200 East Area at Hanford during the Manhattan Project.
Henry Faul was a geologist working on Enrico Fermi's team at the University of Chicago. He was responsible for prospecting uranium ore in Colorado and Utah.
F. D. Bender worked for the Tennessee Eastman Corporation at the Y-12 Plant.
