<TABLE> <S> <C>
<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from the
June 30, 2000 consolidated balance sheet and the consolidated statements of
income, reinvested earnings and cash flows for the six-month period ended
06/30/00 and is qualified in its entirety by reference to such financial
statements.
</LEGEND>
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> JUN-30-2000
<CASH> 16,596
<SECURITIES> 0
<RECEIVABLES> 170,536
<ALLOWANCES> 5,847
<INVENTORY> 187,663
<CURRENT-ASSETS> 404,068
<PP&E> 3,797,814
<DEPRECIATION> 1,276,545
<TOTAL-ASSETS> 3,537,379
<CURRENT-LIABILITIES> 326,885
<BONDS> 764,450
<COMMON> 91,539
0
0
<OTHER-SE> 1,292,852
<TOTAL-LIABILITY-AND-EQUITY> 3,537,379
<SALES> 990,327
<TOTAL-REVENUES> 990,327
<CGS> 814,786
<TOTAL-COSTS> 814,786
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 40,595
<INCOME-PRETAX> 95,498
<INCOME-TAX> 37,244
<INCOME-CONTINUING> 58,254
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 58,254
<EPS-BASIC> 0.64
<EPS-DILUTED> 0.64
</TABLE>