Mineral Interests and Property, Plant and Equipment

12 Months Ended

Dec. 31, 2012

Mineral Interests and Property, Plant and Equipment

Mineral Interests and Property, Plant and Equipment

NOTE 10—Mineral Interests and Property, Plant and Equipment

The book value of mineral interests totaled $3,145.2 million and $3,140.5 million as of December 31, 2012 and 2011, respectively. Accumulated amortization totaled $179.6 million and $84.2 million as of December 31, 2012 and 2011, respectively.

Property, plant and equipment are summarized as follows (in thousands):

	December 31,

	2012			2011
Land	$	87,088		$	85,439
Land improvements		19,949			14,484
Buildings and leasehold improvements		362,296			562,263
Mine development costs		270,768			36,796
Machinery and equipment		1,402,417			991,794
Gas properties and related development		223,200			222,711
Construction in progress		163,096			332,474

Total		2,528,814			2,245,961
Less: Accumulated depreciation and depletion		(796,683	)		(614,628	)

Net	$	1,732,131		$	1,631,333

- Definition

The entire disclosure for long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. This disclosure may include property plant and equipment accounting policies and methodology, a schedule of property, plant and equipment gross, additions, deletions, transfers and other changes, depreciation, depletion and amortization expense, net, accumulated depreciation, depletion and amortization expense and useful lives, income statement disclosures, assets held for sale and public utility disclosures.

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