<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