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	At each end, the tunnels are connected to surface buildings by four escalators and lifts. The Waygood-Otis escalators have 306 wooden steps each, and are the original models from 1951. At the time of construction, they were the longest single-rise escalators in the world, with a vertical rise of 85ft (25.9m) and a length of approximately 200 ft (60 m).	►