<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE BALANCE
SHEET AS OF SEPTEMBER 30, 1999, AND THE INCOME STATEMENT FOR THE NINE MONTHS
ENDED SEPTEMBER 30, 1999, AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-END>                               SEP-30-1999
<CASH>                                           6,661
<SECURITIES>                                         0
<RECEIVABLES>                                  144,002
<ALLOWANCES>                                     1,835
<INVENTORY>                                      1,672
<CURRENT-ASSETS>                               208,236
<PP&E>                                         156,024
<DEPRECIATION>                                (49,951)
<TOTAL-ASSETS>                                 344,747
<CURRENT-LIABILITIES>                          144,716
<BONDS>                                         31,000
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                            67
<OTHER-SE>                                     101,107
<TOTAL-LIABILITY-AND-EQUITY>                   344,747
<SALES>                                              0
<TOTAL-REVENUES>                               509,078
<CGS>                                                0
<TOTAL-COSTS>                                  454,197
<OTHER-EXPENSES>                               (2,221)
<LOSS-PROVISION>                                 (215)
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                 19,769
<INCOME-TAX>                                     5,535
<INCOME-CONTINUING>                             13,295
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    13,295
<EPS-BASIC>                                       1.19
<EPS-DILUTED>                                     1.17