National Museum of Nuclear Science & History
V. J. McDonald worked for the Comstock-Bryant Electric Company.
Helen R. Hughes was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Darol Froman (1906-1997) was an American-born, Canadian physicist. In 1939, Darol Froman studied waveguides and radar as part of a McGill group dedicated to helping the Canadian war effort.
John Arthur "Jack" Robinson was a machinist and instrument maker at the Clinton Engineering Works in Oak Ridge, Tennesse in 1943.
Evans worked in the United States Engineer District Office.
