
<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
COMPANY'S CONDENSED CONSOLIDATED FINANCIAL STATEMENTS INCLUDED IN ITS QUARTERLY
REPORT ON FORM 10-Q FOR THE QUARTERLY PERIOD ENDED JUNE 30, 1996 AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               JUN-30-1996
<CASH>                                          51,433
<SECURITIES>                                         0
<RECEIVABLES>                                  564,043<F1>
<ALLOWANCES>                                    26,019<F2>
<INVENTORY>                                     56,374
<CURRENT-ASSETS>                               707,582
<PP&E>                                       1,825,642
<DEPRECIATION>                                 613,885
<TOTAL-ASSETS>                               2,524,904
<CURRENT-LIABILITIES>                          457,787
<BONDS>                                      1,076,462
<COMMON>                                        10,414
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<OTHER-SE>                                     832,803
<TOTAL-LIABILITY-AND-EQUITY>                 2,524,904
<SALES>                                      1,609,380
<TOTAL-REVENUES>                             1,616,315
<CGS>                                                0
<TOTAL-COSTS>                                1,468,012
<OTHER-EXPENSES>                                51,023
<LOSS-PROVISION>                                     0<F3>
<INTEREST-EXPENSE>                              46,128
<INCOME-PRETAX>                                 51,152
<INCOME-TAX>                                    20,461
<INCOME-CONTINUING>                             30,691
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    30,691
<EPS-PRIMARY>                                      .31
<EPS-DILUTED>                                      .30
<FN>
<F1>Excludes $45,255 of long-term notes receivable.
<F2>Excludes $5,022 of allowance for long-term notes receivable.
<F3>Included in Total costs and expenses line.
</FN>
        

</TABLE>
