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Coal and Other Mineral Rights

12 Months Ended

Dec. 31, 2011

Coal and Other Mineral Rights [Abstract]

Coal and Other Mineral Rights

7.    Coal and Other Mineral Rights

The Partnership’s coal and other mineral rights consist of the following:

		December 31, 2011				December 31, 2010
		(In thousands)
Coal and other mineral rights		$	1,645,451			$	1,629,286
Less accumulated depletion and amortization			(387,950	)			(347,650	)
Net book value		$	1,257,501			$	1,281,636

		For the years ended December 31,
		2011				2010				2009
		(In thousands)
Total depletion and amortization expense on coal and other mineral interests		$	47,230			$	38,501			$	48,591

Included in depletion in 2009 is a charge of $8.2 million related to a terminated lease from a mine closure.

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- Definition

Disclosure of 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 coal mineral, aggregate mineral, oil and gas mineral and land.

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