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National Museum of Nuclear Science & History

Nancy Greenewalt Frederick

Child of Manhattan Project VeteranWilmington, DE

Family Member of Manhattan Project Veteran
Nancy Greenewalt Frederick Listen to Nancy Greenewalt Frederick’s Oral History on Voices of the Manhattan Project

Nancy Greenewalt Frederick is the oldest daughter of Crawford Greenewalt, a chemical engineer who worked on the Manhattan Project and later become president of the DuPont Company. 

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Carol Roberts

Hanford, WA

Carol Roberts moved to Hanford with her family in 1944 after her father was hired by DuPont to work as an electrician on the B Reactor.

Raymond C. Grills

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Raymond C. Grills is an American physical chemist who worked at the University of Chicago’s Metallurgical Laboratory and at Hanford during the Manhattan Project.

Dorothy Vanderford

Los Alamos, NM

Dorothy Vanderford (1973- ) is the granddaughter of J. Robert Oppenheimer. Although Vanderford never met her grandfather, she knows the family narrative well and her father, Peter Oppenheimer, was a child during the Oppenheimer trial.

Dan Millard

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Dan Millard was a high school student in Oak Ridge, TN in 1943. The size of the school expanded from 65 to 1200 students due to the influx of workers for the Manhatan Project.