Atomic Heritage Foundation

1945 July 3

1945 July 3

Casting of the U-235 projectile for Little Boy is completed.

Date Range:

1945CE Jul 3rd

Era:

1945: Ending the War

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.

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

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African-American construction workers at Hanford

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