National Museum of Nuclear Science & History
Bartholomew "Bart" Rivers was an instrument technician at the Hanford, Washington facility from 1943 through the end of the war.
Ruth Rottman was a laboratory technician in the Health Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Barger worked in the United States Engineer District Office.
Randall worked at the 300 Area at Hanford during the Manhattan Project.