<ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE COMPANY'S INTERIM UNAUDITED FINANCIAL STATEMENTS FOR THE NINE MONTHS ENDED SEPTEMBER 30, 1999, AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS. <MULTIPLIER> 1,000 <PERIOD-TYPE> 3-MOS 9-MOS <FISCAL-YEAR-END> DEC-31-1999 DEC-31-1999 <PERIOD-START> JUL-01-1999 JAN-01-1999 <PERIOD-END> SEP-30-1999 SEP-30-1999 <CASH> 10,652 10,652 <SECURITIES> 0 0 <RECEIVABLES> 21,657 21,657 <ALLOWANCES> 0 0 <INVENTORY> 11,816 11,816 <CURRENT-ASSETS> 49,450 49,450 <PP&E> 444,978 444,978 <DEPRECIATION> (73,030) (73,030) <TOTAL-ASSETS> 426,179 426,179 <CURRENT-LIABILITIES> 37,254 37,254 <BONDS> 49,962 49,962 <PREFERRED-MANDATORY> 0 0 <PREFERRED> 0 0 <COMMON> 378 378 <OTHER-SE> 305,416 305,416 <TOTAL-LIABILITY-AND-EQUITY> 426,179 426,179 <SALES> 32,204 107,079 <TOTAL-REVENUES> 32,204 107,079 <CGS> 18,921 58,320 <TOTAL-COSTS> 24,961 73,163 <OTHER-EXPENSES> 0 0 <LOSS-PROVISION> 0 0 <INTEREST-EXPENSE> 0 137 <INCOME-PRETAX> 7,444 34,647 <INCOME-TAX> (2,345) (10,914) <INCOME-CONTINUING> 5,099 23,733 <DISCONTINUED> 0 0 <EXTRAORDINARY> 0 0 <CHANGES> 0 0 <NET-INCOME> 5,099 23,733 <EPS-BASIC> 0.14 0.65 <EPS-DILUTED> 0.13 0.62