
<TABLE> <S> <C>

<ARTICLE>                     5

<MULTIPLIER>                                   1000
<CURRENCY>                                     US Dollars
       
<S>                             <C>
<PERIOD-TYPE>                   9-MOS   
<FISCAL-YEAR-END>                              DEC-31-1997
<PERIOD-START>                                 JUL-1-1998
<PERIOD-END>                                   SEP-30-1998
<EXCHANGE-RATE>                                1.0  
<CASH>                                         450
<SECURITIES>                                   0
<RECEIVABLES>                                  48,217
<ALLOWANCES>                                   0
<INVENTORY>                                    1,597
<CURRENT-ASSETS>                               59,067
<PP&E>                                         257,144
<DEPRECIATION>                                 72,219
<TOTAL-ASSETS>                                 249,059
<CURRENT-LIABILITIES>                          23,355
<BONDS>                                        0
<PREFERRED-MANDATORY>                          0
<PREFERRED>                                    0
<COMMON>                                       126
<OTHER-SE>                                     24
<TOTAL-LIABILITY-AND-EQUITY>                   249,059
<SALES>                                        0
<TOTAL-REVENUES>                               264,400
<CGS>                                          0
<TOTAL-COSTS>                                  239,426
<OTHER-EXPENSES>                               0
<LOSS-PROVISION>                               0
<INTEREST-EXPENSE>                             4,387
<INCOME-PRETAX>                                20,587
<INCOME-TAX>                                   7,907
<INCOME-CONTINUING>                            12,680
<DISCONTINUED>                                 0
<EXTRAORDINARY>                                0
<CHANGES>                                      0
<NET-INCOME>                                   12,680
<EPS-PRIMARY>                                  0.89
<EPS-DILUTED>                                  0.89
        


</TABLE>
