WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

  


In the  following  financial  data  schedule,  Earnings  Per Share - Basic are
listed in the  Earnings Per Share - Primary  field.  Due to Edgar filing rules
and required  tags, the EPS - Primary field could not be changed to read EPS -
Basic.

<ARTICLE>                               5
<LEGEND>                                THIS SCHEDULE CONTAINS SUMMARY
                                        FINANCIAL INFORMATION EXTRACTED
                                        FROM RESTATED FINANCIAL STATEMENTS FOR
                                        THE YEARS ENDED DECEMBER 31, 1996 & 1997
                                        INCLUDED IN THE ANNUAL REPORT ON FORM
                                        10-K FOR THE YEAR ENDED DECEMBER 31, 
                                        1998 AND IS QUALIFIED IN ITS ENTIRETY BY
                                        REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER>                            1000
       
                                     
<PERIOD-TYPE>                           YEAR
<FISCAL-YEAR-END>                       DEC-31-1997
<PERIOD-END>                            DEC-31-1997
<CASH>                                           69,442
<SECURITIES>                                          0
<RECEIVABLES>                                   364,106
<ALLOWANCES>                                      9,985
<INVENTORY>                                      37,156
<CURRENT-ASSETS>                                684,734
<PP&E>                                        1,862,412
<DEPRECIATION>                                  675,410
<TOTAL-ASSETS>                                2,328,051
<CURRENT-LIABILITIES>                           745,701
<BONDS>                                         417,564
<PREFERRED-MANDATORY>                                 0
<PREFERRED>                                           0
<COMMON>                                        268,328
<OTHER-SE>                                      555,192
<TOTAL-LIABILITY-AND-EQUITY>                  2,328,051
<SALES>                                               0
<TOTAL-REVENUES>                                934,034
<CGS>                                                 0
<TOTAL-COSTS>                                   460,572
<OTHER-EXPENSES>                                354,896
<LOSS-PROVISION>                                 16,386
<INTEREST-EXPENSE>                               34,903
<INCOME-PRETAX>                                 117,397
<INCOME-TAX>                                     43,210
<INCOME-CONTINUING>                              74,187
<DISCONTINUED>                                    3,870
<EXTRAORDINARY>                                       0
<CHANGES>                                             0
<NET-INCOME>                                     78,057
<EPS-PRIMARY>                                         2.17
<EPS-DILUTED>                                         2.16