<ARTICLE> 5
<LEGEND>
THE SCHEDULE CONTAINS RESTATED SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
REGISTRANT'S REPORT ON FORM 10-Q FOR THE QUARTER ENDED MARCH 31, 1997 AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<RESTATED> 
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               MAR-31-1997
<CASH>                                       1,238,547
<SECURITIES>                                         0
<RECEIVABLES>                               11,809,860
<ALLOWANCES>                                   147,749
<INVENTORY>                                    340,248
<CURRENT-ASSETS>                            17,355,573
<PP&E>                                     102,686,932
<DEPRECIATION>                              29,935,006
<TOTAL-ASSETS>                              92,857,874
<CURRENT-LIABILITIES>                       18,988,703
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        95,444
<OTHER-SE>                                  45,555,947
<TOTAL-LIABILITY-AND-EQUITY>                92,857,874
<SALES>                                     30,660,109
<TOTAL-REVENUES>                            30,660,109
<CGS>                                                0
<TOTAL-COSTS>                               28,338,729
<OTHER-EXPENSES>                               223,831
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                             206,073
<INCOME-PRETAX>                              2,097,549
<INCOME-TAX>                                   815,947
<INCOME-CONTINUING>                                  0
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                 1,281,602
<EPS-PRIMARY>                                     0.14
<EPS-DILUTED>                                     0.14