<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
COMPANIES FINANCIAL STATEMENT AS OF AND FOR THE SIX MONTH PERIOD ENDED
JUNE 30, 1997 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS AND THE NOTES THERETO CONTAINED IN THE COMPANY'S 10-Q
FOR THE QUARTER ENDED JUNE 30, 1997
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<CASH>                                              49
<SECURITIES>                                         0
<RECEIVABLES>                                   28,939
<ALLOWANCES>                                       413
<INVENTORY>                                      1,109
<CURRENT-ASSETS>                                30,897
<PP&E>                                         102,567
<DEPRECIATION>                                  26,704
<TOTAL-ASSETS>                                 118,784
<CURRENT-LIABILITIES>                           22,489
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                             4
<OTHER-SE>                                      37,285
<TOTAL-LIABILITY-AND-EQUITY>                   118,784
<SALES>                                              0
<TOTAL-REVENUES>                                76,808
<CGS>                                                0
<TOTAL-COSTS>                                   60,462
<OTHER-EXPENSES>                                 9,194
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               1,754
<INCOME-PRETAX>                                  5,652
<INCOME-TAX>                                     2,031
<INCOME-CONTINUING>                              3,621
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     3,621
<EPS-PRIMARY>                                      .81
<EPS-DILUTED>                                      .79