Area Attractions

B Reactor control room
The B Reactor National Historic Landmark at the Hanford Site in Washington state was the world’s first full-scale plutonium production reactor. B Reactor was graphite moderated and water cooled.

When you tour the B Reactor you'll stand in the control room where the famous scientists worked and walk past the graphite core where young physicists modeled new atomic reactions on their slide rules. The war construction workers built it diligently around the clock in secret and did not know what they were building the reactor for.

[This tour is tentative, plans have not been finalized yet] The possible optional B-Reactor tour leaves Wine Valley Inn at 8 am Friday, April 22, 2016.

Learn more about the Hanford B Reactor museum at

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