Nancy Greenewalt Frederick

Child of Manhattan Project VeteranWilmington, DE

Family Member of Manhattan Project Veteran

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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Herbert “Herb” W. Depke

Hanford, WA

Herb Depke arrived in Hanford in 1943 after his father was transferred by the DuPont Company to work as an expediter during the Manhattan Project.

Joe Baca

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Joe Baca was born in Alberquerque, NM. He moved with his family to Los Alamos, NM in April of 1944 after his father, Jose Baca, got a job as a carpenter there.

Dunell Cohn was born in Oak Ridge, Tennessee, in 1944. Cohn’s father, Waldo, was recruited to work on the Manhattan Project in Chicago in 1942 for his work on radioisotopes at Berkeley and Harvard during the 1930s.

Henry Frisch

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Dr. Henry Frisch is a professor of physics at the University of Chicago. His father, David Frisch, worked at Los Alamos during the Manhattan Project.