<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 MARCH 31, 1999 AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-END>                               MAR-31-1999
<CASH>                                          19,114
<SECURITIES>                                         0
<RECEIVABLES>                                  543,076<F1>
<ALLOWANCES>                                    24,740<F2>
<INVENTORY>                                     32,167
<CURRENT-ASSETS>                               643,998
<PP&E>                                       1,820,409
<DEPRECIATION>                                 696,783
<TOTAL-ASSETS>                               2,110,442
<CURRENT-LIABILITIES>                          369,562
<BONDS>                                        810,461
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        11,038
<OTHER-SE>                                     770,548
<TOTAL-LIABILITY-AND-EQUITY>                 2,110,442
<SALES>                                        633,601
<TOTAL-REVENUES>                               635,029
<CGS>                                                0
<TOTAL-COSTS>                                  579,536
<OTHER-EXPENSES>                                29,133
<LOSS-PROVISION>                                     0<F3>
<INTEREST-EXPENSE>                              16,983
<INCOME-PRETAX>                                  9,377
<INCOME-TAX>                                     3,470
<INCOME-CONTINUING>                              5,907
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     5,907
<EPS-PRIMARY>                                      .06
<EPS-DILUTED>                                      .06
<FN>
<F1>EXCLUDES $14,670 OF LONG-TERM NOTES RECEIVABLE.
<F2>EXCLUDES $2,902 OF ALLOWANCE FOR DOUBTFUL LONG-TERM NOTES RECEIVABLE.
<F3>INCLUDED IN TOTAL COSTS AND EXPENSES LINE.
</FN>