Consolidated Balance Sheets (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010	Jun. 30, 2010
Current Assets:
Cash and cash equivalents	$ 26,099	$ 70,323	$ 32,095
Accounts receivable, net	269,390	183,361	257,761
Inventories, net	336,365	331,894	319,842
Current deferred income tax benefits	91,041	83,380	72,750
Other current assets	22,673	27,253	26,018
Total Current Assets	745,568	696,211	708,466
Property, plant and equipment	3,644,580	3,568,275	3,526,485
Allowances for depreciation, depletion and amortization	(1,946,802)	(1,880,445)	(1,832,068)
Net property, plant and equipment	1,697,778	1,687,830	1,694,417
Goodwill	638,759	626,527	624,224
Other intangibles, net	18,622	17,548	18,284
Other noncurrent assets	48,192	46,627	51,001
Total Assets	3,148,919	3,074,743	3,096,392
Current Liabilities:
Bank overdraft		2,123	3,403
Accounts payable	85,415	60,333	80,238
Accrued salaries, benefits and payroll taxes	12,618	17,506	15,690
Pension and postretirement benefits	4,194	6,034	18,693
Accrued insurance and other taxes	28,514	23,535	28,802
Income taxes	3,782	174	1,862
Current maturities of long-term debt and short-term facilities	106,959	248,714	244,147
Accrued interest	7,644	12,045	11,759
Other current liabilities	13,772	15,029	10,032
Total Current Liabilities	262,898	385,493	414,626
Long-term debt	978,956	782,045	811,938
Pension, postretirement and postemployment benefits	121,150	127,671	158,787
Noncurrent deferred income taxes	248,330	228,698	196,896
Other noncurrent liabilities	86,986	82,577	97,348
Total Liabilities	1,698,320	1,606,484	1,679,595
Equity:
Common stock, par value $0.01 per share	456	455	454
Preferred stock, par value $0.01 per share
Additional paid-in capital	397,575	396,485	392,519
Accumulated other comprehensive loss	(49,319)	(53,660)	(69,488)
Retained earnings	1,063,732	1,082,160	1,052,159
Total Shareholders' Equity	1,412,444	1,425,440	1,375,644
Noncontrolling interests	38,155	42,819	41,153
Total Equity	1,450,599	1,468,259	1,416,797
Total Liabilities and Equity	$ 3,148,919	$ 3,074,743	$ 3,096,392