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Inventories

12 Months Ended

Dec. 31, 2011

9. Inventories

Inventories consist of the following:


	December 31
	2011	2010
	(In thousands)
Coal	$ 206,517	$ 115,647
Repair parts and supplies	163,527	119,969
Work-in-process	7,446	—
	$ 377,490	$ 235,616

The work-in-process is related the Company's ADDCAR subsidiary acquired with ICG, which manufactures and sells its patented highwall mining system. The repair parts and supplies are stated net of an allowance for slow-moving and obsolete inventories of $13.1 million and $12.7 million at December 31, 2011 and 2010, respectively.

- Definition

The entire disclosure for inventory. This may include, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the major classes of inventory, and the nature of the cost elements included in inventory. If inventory is stated above cost, accrued net losses on firm purchase commitments for inventory and losses resulting from valuing inventory at the lower-of-cost-or-market may also be included. For LIFO inventory, may disclose the amount and basis for determining the excess of replacement or current cost over stated LIFO value and the effects of a LIFO quantities liquidation that impacts net income.

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