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Inventories

12 Months Ended

Dec. 31, 2011

8.	Inventories

Inventories, at December 31, consist of the following:

	2011		2010
Raw materials	$	41,142	$	49,098
Work-in-process		15,548		13,979
Finished goods		10,535		7,901
Operating and other supplies		104,736		84,930
Inventories	$	171,961	$	155,908

- 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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