National Museum of Nuclear Science & History
R. T. Arends worked for the Roane-Anderson Company.
Charles J. Spiegl was a civilian scientist employed by the Manhattan Project. He was involved in radiation toxicology, studying the effects of radiation on animals at the Trinity Site near Alamogordo, New Mexico.
Lawrence Bartell was born in Ann Arbor, Michigan on February 2, 1923. In 1944, after completing his studies at the University of Michigan, Bartell joined Glenn Seaborg's uranium research team.