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![Structurae [en]: U.S. Steel Tower](https://files.structurae.net/files/photos/5256/2019-09-19/dsc05351.jpeg "Structurae [en]: U.S. Steel Tower")
Structurae [en]: U.S. Steel Tower
U.S. Steel Tower - Wikipedia
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The US Steel Tower, a lasting beacon on the Pittsburgh skyline and legacy of Andrew Carnegie | Double Stone Steel
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Pittsburgh's tallest building, US Steel Tower, for sale
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PA Environment Digest Blog: Pittsburgh's U.S. Steel Tower Becomes 2nd Largest Building In The World to Achieve LEED Silver Certification For O+M
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U.S. Steel announces new headquarters in Lower Hill Redevelopment site
Iconic U.S. Steel Tower Earns Energy Star Certification
