People of the Manhattan Project

Several men and women seated at outdoor desks with military personnel looking on.
Workers sign up at Oak Ridge in 1944.

US DEPARTMENT OF ENERGY/ED WESTCOTT

 
Over 500,000 workers, scientists, engineers, and political leaders contributed to the Manhattan Project's success. The world’s first nuclear detonation and the atomic bombings of Japan in 1945 impacted hundreds of thousands more. Since then, Manhattan Project legacies have created positive applications and challenges like nuclear waste cleanup and long-term storage. Explore stories of the people who lived through it and people moving forward in a world the Manhattan Project changed forever.
 
 
 
 

 

People by Park Location

 

Last updated: September 5, 2025

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Contact Info

Mailing Address:

National Park Service, Manhattan Project National Historical Park
c/o NPS Intermountain Regional Office
P.O. Box 25287

Denver, CO 80225-0287

Phone:

Hanford: 509.376.1647
Los Alamos: 505.661.6277
Oak Ridge: 865.482.1942

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