<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM CONSOLIDATED
BALANCE SHEET CONSOLIDATED STATEMENT OF OPERATIONS AND IS QUALIFIED IN ITS
ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.

<MULTIPLIER> 1,000

                                                             
<PERIOD-TYPE>                                    3-MOS                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-2000             DEC-31-2000
<PERIOD-START>                             APR-01-2000             JAN-01-2000
<PERIOD-END>                               JUN-30-2000             JUN-30-2000
<CASH>                                           1,531                   1,531
<SECURITIES>                                         0                       0
<RECEIVABLES>                                   36,171                  36,171
<ALLOWANCES>                                         0                       0
<INVENTORY>                                     15,600                  15,600
<CURRENT-ASSETS>                                57,977                  57,977
<PP&E>                                         602,974                 602,974
<DEPRECIATION>                                (84,037)                (84,037)
<TOTAL-ASSETS>                                 581,889                 581,889
<CURRENT-LIABILITIES>                           56,576                  56,576
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                           385                     385
<OTHER-SE>                                     364,325                 364,325
<TOTAL-LIABILITY-AND-EQUITY>                   581,889                 581,889
<SALES>                                         48,565                 109,900
<TOTAL-REVENUES>                                48,565                 109,900
<CGS>                                           29,586                  60,780
<TOTAL-COSTS>                                   31,829                  65,078
<OTHER-EXPENSES>                                     0                       0
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                                 185                     464
<INCOME-PRETAX>                                 16,921                  45,286
<INCOME-TAX>                                   (4,738)                (12,680)
<INCOME-CONTINUING>                             12,183                  32,606
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                    12,183                  32,606
<EPS-BASIC>                                       0.32                    0.85
<EPS-DILUTED>                                     0.31                    0.83