Atomic Heritage Foundation

In partnership with the National Museum of Nuclear Science & History

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November 1940

November 1940

John Dunning and Nobel Prize winner Harold Urey begin investigating isotope separation techniques without U.S. government support.

Date Range:

1940CE Nov

Era:

1939 to 1941: Investigating Nuclear Weapons

Hear the stories of the Manhattan Project

Browse our collection of oral histories with workers, families, service members, and more about their experiences in the Manhattan Project.

Tour the Sites of the Manhattan Project

Tour some of the key locations of the Manhattan Project with an audio guide.

Read recent news & articles

Secretary of DOI Sally Jewel and of DOE Ernie Moniz shake hands on launching the new park as a partnership between their two agencies.

5th Anniversary of the Manhattan Project National Historical Park

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