World's Heaviest Door

[wylk]

Not a bank vault door, but perhaps bordering on being an antique:



From http://energy.gov/articles/photo-wee...m_medium=email --

"This photo from 1979 shows a Lawrence Livermore National Laboratory employee opening the world's heaviest hinged door, which was eight feet thick, nearly twelve feet wide, and weighed 97,000 pounds. A special bearing in the hinge allowed a single person to open or close the concrete-filled door, which was used to shield the Rotating Target Neutron Source-II (RTNS-II) -- the world’s most intense source of continuous fusion neutrons."

Is this really the heaviest door? For example, the Cleveland Federal Reserve bank's door is often quoted at 100 tons (200,000 pounds); that includes the crane hinge, but the door alone is still probably heavier. One King West's door might also be heavier.

Regardless, it's an impressive door.