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Quarterly report pursuant to Section 13 or 15(d)

PROPERTY, PLANT AND EQUIPMENT (Narrative) (Details)

v3.7.0.1
PROPERTY, PLANT AND EQUIPMENT (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Property, Plant and Equipment [Abstract] Ìý Ìý
Depreciation and depletion $ 22.6 $ 33.8