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B Reactor

Richland, Washington
County of Benton.
National Register Number: 92000245
Resource type: Structure.
Property type: Defense - military facility.
Certified Local Government: NO

Statement of Significance (as of designation - August 19, 2008):
B Reactor is the world’s first production-scale nuclear reactor, built in 1943-1944, as part of the Manhattan Project, the United States’ wartime program to build a nuclear weapon. It produced plutonium used in the world’s first nuclear detonation, the Trinity test, at Alamogordo, New Mexico, on July 16, 1945, and in the bomb that destroyed Nagasaki, Japan, on August 9, 1945. B Reactor served as the design model for early nuclear facilities constructed during the Cold War.

The NHL was designated on August 19, 2008

Comments and questions about the database may be directed to NHL_info@nps.gov