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Double-deck elevators rise as taller buildings test limits
2013-01-03 05:15:29| Paper - Topix.net
A woman walks past a bank of elevators in the Empire State Building in New York in this file photo.
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Double-Deck Elevators Rise as Tallest Towers Test Limits
2013-01-02 13:55:45| Industrial Machines - Topix.net
Otis Elevator Co.'s quest to carry people up skyscrapers twice as tall as the Empire State Building hearkens back to a pivotal innovation by its founder: ensuring that riders won't plummet back to earth if something goes awry.