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Inventories

6 Months Ended

Jun. 30, 2011

Notes to Financial Statements [Abstract]

Inventories

Inventories consist of the following:

		June 30, 2011				December 31, 2010
Raw materials		$	66,057			$	49,098
Work-in-process			16,564				13,979
Finished goods			7,638				7,901
Operating and other supplies			97,129				84,930
Inventories		$	187,388			$	155,908

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

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This element represents the complete disclosure related to 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 43
-Chapter 3
-Section A
-Paragraph 9

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 6
-Subparagraph a, b, c
-Article 5

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