National Museum of Nuclear Science & History
Elmer began working with the Manhattan Project in 1941. He was one of the first people to arrive at Oak Ridge and experienced first-hand some of the difficulties there with cyclotrons and isotope separation.
Elinor Pulitzer Hempelmann (1922-2012) was a secretary at Los Alamos during the Manhattan Project and wife of Health Group Director Louis Hempelmann.
Charles Critchfield (1910-1994) was an American mathematical physicist. In December 1942, he was approached by J.
