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4,430 pounds is about one-one-hundred-thousandth as heavy as The Sears Tower
In other words, it's 0.0000099570 times the weight of The Sears Tower, and the weight of The Sears Tower is 100,400 times that amount.
(officially "Willis Tower" as of 2009) (Chicago, Illinois)
The Willis Tower weighs approximately 444,900,000 pounds. The outer wall surface of the Tower is covered with black anodized aluminum panels which would total 110,000 sq. m (28 acres) if laid out together.
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