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Inventories

12 Months Ended

Dec. 31, 2014

Inventories, at December 31, consist of the following:



	2014		2013
Raw materials	$	78,599	$	69,776
Work-in-process	33,941		22,183
Finished goods	19,969		17,661
Operating and other supplies	150,971		129,995
Inventories (1)	$	283,480	$	239,615


(1)	Includes inventory acquired in connection with the Mt. Holly acquisition. See Note 2 Business acquisitions for additional information about the Mt. Holly acquisition.

- 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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