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Quarterly report pursuant to Section 13 or 15(d)

SEGMENT REPORTING (Narrative) (Details)

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SEGMENT REPORTING (Narrative) (Details)
6 Months Ended
Jun. 30, 2015
Facility
U.S. Iron Ore [Member] Ìý
Segment Reporting Information [Line Items] Ìý
Number of mines (in number of facilities) 5
Asia Pacific Iron Ore [Member] Ìý
Segment Reporting Information [Line Items] Ìý
Number of mines (in number of facilities) 1