Mines Advanced Projects of Iron Ore, Metallic Minerals, Industrial Minerals, and Selected Construction Aggregates January 2016 Index for Taconite Mines and Plants 1. IDLE United States Steel (USS) Keewatin Taconite 2. Hibbing Taconite Mine and Plant 3. USS Minntac Mine and Plant 4. Arcelor Mittal Minorca Mine and Plant 5.
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