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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Tables)
9 Months Ended
Sep. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule Of Subsidiaries
The unaudited condensed consolidated financial statements include our accounts and the accounts of our wholly-owned and majority-owned subsidiaries, including the following operations as of September 30, 2016:
Name
 
Location
 
Ownership Interest
 
Operation
 
Status of Operations
Northshore
 
Minnesota
 
100.0%
 
Iron Ore
 
Active
United Taconite
 
Minnesota
 
100.0%
 
Iron Ore
 
Active
Tilden
 
Michigan
 
85.0%
 
Iron Ore
 
Active
Empire
 
Michigan
 
79.0%
 
Iron Ore
 
Idle
Koolyanobbing
 
Western Australia
 
100.0%
 
Iron Ore
 
Active