B Reactor Museum Association

B Reactor, the world's first industrial-scale nuclear reactor, was built during World War II as part of the top-secret Manhattan Project to develop the atomic bomb. B Reactor is included in the Manhattan Project National Historical Park, consisting of historic facilities at Hanford, Los Alamos and Oak Ridge, which was authorized by Congress in December 2014. A memorandum of agreement between the National Park Service and the Department of Energy has been drafted to define their respective roles in managing the park.