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Published April 25, 2013, 12:00 AM

DR-grade taconite pellets

These directly reduced iron ore taconite pellets were produced at Northshore Mining. The pellets can be used to make iron and steel in electric-arc “mini-mills” that are smaller than traditional blast furnaces. (Photo by Cliffs Natural Resources)
Read the article: Cliffs finishes full-scale test run of new taconite pellets