PROPERTY, PLANT AND EQUIPMENT

6 Months Ended

Jun. 30, 2018

Property, Plant and Equipment [Abstract]

PROPERTY, PLANT AND EQUIPMENT

NOTE 6 - PROPERTY, PLANT AND EQUIPMENT

The following table indicates the value of each of the major classes of our consolidated depreciable assets:

	(In Millions)
	June 30, 2018			December 31, 2017
Land rights and mineral rights	$	549.6		$	549.6
Office and information technology	65.1			65.8
Buildings	84.0			85.2
Mining equipment	531.2			533.9
Processing equipment	616.0			610.9
Electric power facilities	56.9			56.9
Land improvements	24.2			23.7
Asset retirement obligation	16.9			16.9
Other	25.2			25.2
Construction in-progress	102.2			32.6
	2,071.3			2,000.7
Allowance for depreciation and depletion	(990.0		)	(966.9		)
	$	1,081.3		$	1,033.8