This artist rendering released by U.S. Thrill Rides LLC shows a tower called the Polercoaster at the Tropicana Las Vegas hotel-casino on the south end of the Strip. U.S. Thrill Rides LLC the

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This artist rendering released by U.S. Thrill Rides LLC shows a tower called the Polercoaster at the Tropicana Las Vegas hotel-casino on the south end of the Strip. U.S. Thrill Rides LLC the developer is seeking federal approval for air space for a 650-foot-tall roller coaster on the Las Vegas Strip. The structure would be about half as high as the 1,149-foot Stratosphere tower, topped by an observation deck, dining and retail. (AP Photo/U.S. Thrill Rides LLC) less 

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Associated Press
Tue, Jun 18, 2013 10:34 PM EDT