CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2011
Current Assets:
Cash and cash equivalents	$ 35,421	$ 26,022	$ 56,840
Accounts receivable, net	296,947	203,748	259,773
Inventories, net	335,092	322,607	337,730
Current deferred income tax benefits	79,758	80,674	92,959
Costs in excess of billings	7,608	1,437	967
Other current assets	30,281	23,362	19,147
Total Current Assets	785,107	657,850	767,416
Property, plant and equipment	3,775,320	3,688,692	3,662,446
Allowances for depreciation, depletion and amortization	(2,024,379)	(1,914,401)	(1,975,805)
Net property, plant and equipment	1,750,941	1,774,291	1,686,641
Goodwill	615,986	616,671	639,039
Other intangibles, net	51,330	54,133	18,211
Other noncurrent assets	39,840	44,877	47,251
Total Assets	3,243,204	3,147,822	3,158,558
Current Liabilities:
Bank overdraft	102
Accounts payable	99,628	92,210	86,322
Accrued salaries, benefits and payroll taxes	17,436	16,732	16,867
Pension and postretirement benefits	6,442	5,250	4,420
Accrued insurance and other taxes	34,175	26,408	31,902
Income taxes	13,291	1,871	16,256
Current maturities of long-term debt and short-term facilities	6,671	7,182	7,150
Accrued interest	18,209	7,669	18,709
Other current liabilities	21,155	16,390	16,120
Total Current Liabilities	217,109	173,712	197,746
Long-term debt	1,092,117	1,052,902	1,038,335
Pension, postretirement and postemployment benefits	135,761	158,101	102,787
Noncurrent deferred income taxes	243,759	222,064	249,572
Other noncurrent liabilities	84,437	92,179	84,567
Total Liabilities	1,773,183	1,698,958	1,673,007
Equity:
Common stock, par value $0.01 per share	458	456	456
Preferred stock, par value $0.01 per share
Additional paid-in capital	408,898	401,864	400,855
Accumulated other comprehensive loss	(77,480)	(83,890)	(49,560)
Retained earnings	1,098,529	1,090,891	1,094,469
Total Shareholders' Equity	1,430,405	1,409,321	1,446,220
Noncontrolling interests	39,616	39,543	39,331
Total Equity	1,470,021	1,448,864	1,485,551
Total Liabilities and Equity	$ 3,243,204	$ 3,147,822	$ 3,158,558