<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONDENSED STATEMENTS OF INCOME AND THE CONDENSED BALANCE SHEETS AND IS QUALIFIED
IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>

                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               JUN-30-1999
<CASH>                                         920,000
<SECURITIES>                                         0
<RECEIVABLES>                               26,643,000
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                            37,687,000
<PP&E>                                     178,180,000
<DEPRECIATION>                              47,392,000
<TOTAL-ASSETS>                             169,334,000
<CURRENT-LIABILITIES>                       35,966,000
<BONDS>                                     51,216,000
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        43,000
<OTHER-SE>                                  54,725,000
<TOTAL-LIABILITY-AND-EQUITY>               169,334,000
<SALES>                                    103,289,000
<TOTAL-REVENUES>                           103,289,000
<CGS>                                                0
<TOTAL-COSTS>                               95,592,000
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                           1,874,000
<INCOME-PRETAX>                              5,934,000
<INCOME-TAX>                                 2,314,000
<INCOME-CONTINUING>                          3,620,000
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                 3,620,000
<EPS-BASIC>                                       0.81
<EPS-DILUTED>                                     0.81