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The 25-ton blast door of a once-secret nuclear bunker built for members of Congress is seen beneath The Greenbrier, a four-star resort near White Sulphur Springs, West Virginia, USA, 09 June 2015. The 112,544-square-foot (34, 303-square-meter) bomb shelter, completed during the Cold War in 1961, included enough beds and supplies to accommodate all 535 lawmakers, as well as one staffer each. There were also decontamination chambers, an intensive care unit and a communications briefing room, all surrounded by three to five feet (one to one and a half meters) of concrete.