Inventories (Tables)

6 Months Ended

Jun. 30, 2014

Inventories

Schedule of inventories

Inventory consisted of the following (in thousands):

	June 30,		December 31,
	2014		2013
Raw materials	$	614,098	$	660,384
Supplies	288,631		293,533
Work in progress	130,908		84,710
Finished goods	287,234		276,120
Total inventories	$	1,320,871	$	1,314,747