Inventories (Tables)

6 Months Ended

Jun. 30, 2013

Inventories

Schedule of inventories

Inventories are stated at lower of cost or market.  Cost is determined using a weighted average method for scrap, and a first-in, first-out basis for all other inventories.  Inventories consisted of the following (in thousands):

	June 30,		December 31,
	2013		2012
Raw materials	$	558,355	$	594,388
Supplies	279,147		278,494
Work-in-progress	89,156		82,934
Finished goods	241,841		246,691
Total inventories	$	1,168,499	$	1,202,507