<TABLE> <S> <C>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM CONDENSED
CONSOLIDATED BALANCE SHEETS AND STATEMENTS OF EARNINGS 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-31-2000
<PERIOD-END> JUN-30-2000
<CASH> 4,106
<SECURITIES> 9,850
<RECEIVABLES> 101,110
<ALLOWANCES> 674
<INVENTORY> 11,758
<CURRENT-ASSETS> 137,384
<PP&E> 706,539
<DEPRECIATION> 249,452
<TOTAL-ASSETS> 768,655
<CURRENT-LIABILITIES> 95,318
<BONDS> 313,604
0
0
<COMMON> 3,091
<OTHER-SE> 252,754
<TOTAL-LIABILITY-AND-EQUITY> 768,655
<SALES> 28,473
<TOTAL-REVENUES> 256,664
<CGS> 22,547
<TOTAL-COSTS> 161,366
<OTHER-EXPENSES> 58,906
<LOSS-PROVISION> 4
<INTEREST-EXPENSE> 11,827
<INCOME-PRETAX> 27,023
<INCOME-TAX> 11,076
<INCOME-CONTINUING> 15,947
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 15,947
<EPS-BASIC> .65
<EPS-DILUTED> .65
</TABLE>