PROPERTY, PLANT AND EQUIPMENT

9 Months Ended

Sep. 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)
	September 30, 2018			December 31, 2017
Land rights and mineral rights	$	549.6		$	549.6
Office and information technology	67.8			65.8
Buildings	84.1			85.2
Mining equipment	538.7			533.9
Processing equipment	619.0			610.9
Electric power facilities	58.7			56.9
Land improvements	24.2			23.7
Asset retirement obligation	16.9			16.9
Other	25.2			25.2
Construction in-progress	168.7			32.6
	2,152.9			2,000.7
Allowance for depreciation and depletion	(1,008.1		)	(966.9		)
	$	1,144.8		$	1,033.8