<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM 2ND QTR 1996
FORM 10-Q FINANCIAL STATEMENTS AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE 
TO SUCH FINANCIAL STATEMENTS
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-START>                             JAN-01-1996
<PERIOD-END>                               JUN-30-1996
<CASH>                                           3,622
<SECURITIES>                                         0
<RECEIVABLES>                                   14,731
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                                20,674
<PP&E>                                         126,620
<DEPRECIATION>                                  42,797
<TOTAL-ASSETS>                                 111,078
<CURRENT-LIABILITIES>                           13,025
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        64,482
<OTHER-SE>                                       4,568
<TOTAL-LIABILITY-AND-EQUITY>                   111,078
<SALES>                                         35,742
<TOTAL-REVENUES>                                35,742
<CGS>                                           28,866
<TOTAL-COSTS>                                   34,002
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                  71
<INCOME-PRETAX>                                  2,067
<INCOME-TAX>                                       827
<INCOME-CONTINUING>                              1,240
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     1,240
<EPS-PRIMARY>                                      .04
<EPS-DILUTED>                                      .04