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 NEW YORK (AP) - The steel bound for the Freedom Tower at ground zero travels thousands of miles, from a plant in Luxembourg where columns are rolled through casting machines at temperatures approaching 2,340 degrees.
Scrap metal melted into liquid steel in an electric furnace is cast, heated, cooled and heated again at the ArcelorMittal steel mill in Differdange.
The steel makes its way to a plant in Virginia where the huge columns are cut to size. Eventually, it is shipped to New York City, where the columns are lifted by crane and painstakingly set on top of each other at ground zero.
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