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<PAGE>
<ARTICLE> 5
<MULTIPLIER> 1,000
<S> <C> <C>
<PERIOD-TYPE> 3-MOS 9-MOS
<FISCAL-YEAR-END> DEC-31-2000 DEC-31-2000
<PERIOD-START> JUL-01-2000 JAN-01-2000
<PERIOD-END> SEP-30-2000 SEP-30-2000
<CASH> 12,395 12,395
<SECURITIES> 0 0
<RECEIVABLES> 38,629 38,629
<ALLOWANCES> 0 0
<INVENTORY> 18,532 18,532
<CURRENT-ASSETS> 83,390 83,390
<PP&E> 655,139 655,139
<DEPRECIATION> (88,237) (88,237)
<TOTAL-ASSETS> 654,633 654,633
<CURRENT-LIABILITIES> 186,494 186,494
<BONDS> 0 0
0 0
0 0
<COMMON> 386 386
<OTHER-SE> 381,274 381,274
<TOTAL-LIABILITY-AND-EQUITY> 654,633 654,633
<SALES> 52,555 162,455
<TOTAL-REVENUES> 52,555 162,455
<CGS> 30,884 91,664
<TOTAL-COSTS> 32,715 97,793
<OTHER-EXPENSES> 0 0
<LOSS-PROVISION> 0 0
<INTEREST-EXPENSE> (418) (882)
<INCOME-PRETAX> 20,258 65,544
<INCOME-TAX> (5,665) (18,345)
<INCOME-CONTINUING> 14,593 47,199
<DISCONTINUED> 0 0
<EXTRAORDINARY> 0 0
<CHANGES> 0 0
<NET-INCOME> 14,593 47,199
<EPS-BASIC> 0.38 1.23
<EPS-DILUTED> 0.37 1.20
</TABLE>