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<RESTATED> 
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<PERIOD-TYPE>                   3-MOS                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1997
<PERIOD-START>                             APR-01-1997             JAN-01-1997
<PERIOD-END>                               JUN-30-1997             JUN-30-1997
<CASH>                                           4,874                       0
<SECURITIES>                                         0                       0
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<CURRENT-ASSETS>                                51,195                       0
<PP&E>                                       1,024,311                       0
<DEPRECIATION>                               (263,828)                       0
<TOTAL-ASSETS>                                 827,799                       0
<CURRENT-LIABILITIES>                           36,490                       0
<BONDS>                                        294,292                       0
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<PREFERRED>                                          0                       0
<COMMON>                                           202                       0
<OTHER-SE>                                     349,322                       0
<TOTAL-LIABILITY-AND-EQUITY>                   827,799                       0
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<TOTAL-REVENUES>                                85,976                 188,386
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<OTHER-EXPENSES>                                 7,558                  15,066
<LOSS-PROVISION>                                     0                       0
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<INCOME-TAX>                                     3,911                  13,741
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<EPS-PRIMARY>                                      .15                     .88
<EPS-DILUTED>                                      .15                     .85