<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE BALANCE
SHEET AS OF JUNE 30, 1995 AND THE INCOME STATEMENT FOR THE SIX MONTHS ENDED JUNE
30, 1995 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1995
<PERIOD-END>                               JUN-30-1995
<CASH>                                         $43,197
<SECURITIES>                                         0
<RECEIVABLES>                                  289,403
<ALLOWANCES>                                  (13,800)
<INVENTORY>                                     91,919
<CURRENT-ASSETS>                               524,736
<PP&E>                                       1,989,405
<DEPRECIATION>                               (675,737)
<TOTAL-ASSETS>                              $2,072,932
<CURRENT-LIABILITIES>                          357,989
<BONDS>                                        677,063
<COMMON>                                       313,779
<PREFERRED-MANDATORY>                           55,000
<PREFERRED>                                     40,976
<OTHER-SE>                                     377,258
<TOTAL-LIABILITY-AND-EQUITY>                $2,072,932
<SALES>                                              0
<TOTAL-REVENUES>                               937,101
<CGS>                                                0
<TOTAL-COSTS>                                  721,132
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              22,363
<INCOME-PRETAX>                                 56,298
<INCOME-TAX>                                    25,600
<INCOME-CONTINUING>                             24,210
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    20,060
<EPS-PRIMARY>                                      .53
<EPS-DILUTED>                                      .48