<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-30-1999
<CASH>                                           5,933
<SECURITIES>                                         0
<RECEIVABLES>                                   16,068
<ALLOWANCES>                                         0
<INVENTORY>                                        388
<CURRENT-ASSETS>                                25,745
<PP&E>                                          97,636
<DEPRECIATION>                                  45,712
<TOTAL-ASSETS>                                  78,176
<CURRENT-LIABILITIES>                           12,381
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        11,850
<OTHER-SE>                                      40,478
<TOTAL-LIABILITY-AND-EQUITY>                    78,176
<SALES>                                         93,698
<TOTAL-REVENUES>                                93,698
<CGS>                                                0
<TOTAL-COSTS>                                   88,318
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 100
<INCOME-PRETAX>                                  5,500
<INCOME-TAX>                                     2,160
<INCOME-CONTINUING>                                  0
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     3,339
<EPS-BASIC>                                     0.48
<EPS-DILUTED>                                     0.48