B Reactor

B Reactor has received broad recognition for its historical importance:

  • In 1976 it was listed as a National Historic Mechanical Engineering Landmark by the American Society of Mechanical Engineers.
  • In 1992 the National Park Service entered the reactor into the National Register of Historic Places.
  • In 1993 the American Nuclear Society presented the Nuclear Historic Landmark Award to the reactor.
  • In 1994 the American Society of Civil Engineers named it a National Civil Engineering Landmark.
  • In 2008 the National Park Service designated it a National Historic Landmark.
  • In December 2014 B Reactor was incorporated into a new Manhattan Project National Historical Park managed by the National Park Service.

Hanford’s Historic B Reactor slide show

BRMA’s 2005 slide show presentation includes schematic drawings of the facility and its operation, a historical operations timeline, details and photos of the tour route, and information about BRMA. The information about preservation actions and plans is out-of-date now that preservation has been secured by incorporation of B Reactor into the new Manhattan Project National Historical Park.

Hanford's Historic B Reactor