National Museum of Nuclear Science & History
Hubbard worked for Stone and Webster Engineering Corporation.
Robert Coveyou was a mathematician and health physicist that worked at both the Met Lab in Chicago and at the X-10 graphite reactor in Oak Ridge, Tennessee.
W. C. Young 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.