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.

Tour the Sites of the Manhattan Project

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

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The Japanese attack on Pearl Harbor

Remembering Pearl Harbor

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