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Kingdom Tower Watch

Finnish elevator company Kone was recently awarded the 65-lift contract for Saudi Arabia's Kingdom Tower, which, as the proposed tallest skyscraper in the world, involves some pretty extraordinary engineering problems. Because traditional steel cables are too heavy for a kilometer-high tower, Kone will use a carbon fiber cable they developed called UltraRope, and will test their designs in an 1,000-foot mine shaft converted into an elevator testing facility. [Gizmodo; previously]