<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
FINANCIAL STATEMENTS CONTAINED IN THE BODY OF THE ACCOMPANYING FORM 10-Q
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               SEP-30-1998
<CASH>                                           6,718
<SECURITIES>                                         0
<RECEIVABLES>                                   14,267
<ALLOWANCES>                                         0
<INVENTORY>                                        391
<CURRENT-ASSETS>                                24,742
<PP&E>                                          83,002
<DEPRECIATION>                                  39,639
<TOTAL-ASSETS>                                  68,624
<CURRENT-LIABILITIES>                           12,403
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        12,101
<OTHER-SE>                                      35,850
<TOTAL-LIABILITY-AND-EQUITY>                    47,952
<SALES>                                         84,637
<TOTAL-REVENUES>                                84,637
<CGS>                                                0
<TOTAL-COSTS>                                   77,367
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 142
<INCOME-PRETAX>                                  7,366
<INCOME-TAX>                                     2,865
<INCOME-CONTINUING>                                  0
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     4,500
<EPS-PRIMARY>                                      .64
<EPS-DILUTED>                                      .64