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Inventories

3 Months Ended

Mar. 31, 2012

Inventories consist of the following:



	March 31, 2012		December 31, 2011
Raw materials	$	42,557	$	41,142
Work-in-process	15,932		15,548
Finished goods	10,886		10,535
Operating and other supplies	100,927		104,736
Inventories	$	170,302	$	171,961

Inventories are stated at the lower of cost or market, using the first-in, first-out method (“FIFO”).

- 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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