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Quarterly report pursuant to Section 13 or 15(d)

PROPERTY, PLANT AND EQUIPMENT (Narrative) (Details)

v3.5.0.2
PROPERTY, PLANT AND EQUIPMENT (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Property, Plant and Equipment [Abstract] Ìý Ìý Ìý Ìý
Depreciation and depletion $ 25.7 $ 29.5 $ 59.5 $ 58.2