National Museum of Nuclear Science & History
George Caldwell worked for the J.A. Jones Construction Company.
Margaret Hoffarth was born in Colorado and moved west with her parents, traveling to Idaho in a wagon train.
Ralph Berger was a research assistant at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Phillip Fineman was a research associate in the Chemistry Division of the University of Chicago’s Metallurgical Laboratory during the Manhattan Project.
