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58,270 ounces is about one-one-hundred-thousandth as heavy as The Sears Tower.
In other words, it's 0.0000081860 times the weight of The Sears Tower, and the weight of The Sears Tower is 122,200 times that amount.
(officially "Willis Tower" as of 2009) (Chicago, Illinois)
The Willis Tower weighs approximately 7,118,000,000 ounces. 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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