<ARTICLE>                     5
<LEGEND>
LEGEND : THE SCHEDULE CONTAINS SUMMARY FINANCIAL  INFORMATION EXTRACTED FROM THE
COMPANY'S  CONSOLIDATED FINANCIAL STATEMENTS AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<RESTATED>
<MULTIPLIER>                  1
<CURRENCY>                    U.S. Dollars
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                              DEC-31-1997
<PERIOD-START>                                 JAN-01-1997
<PERIOD-END>                                   JUN-30-1997
<EXCHANGE-RATE>                                          1
<CASH>                                              26,571               
<SECURITIES>                                             0
<RECEIVABLES>                                   11,417,478
<ALLOWANCES>                                       384,172
<INVENTORY>                                        439,927
<CURRENT-ASSETS>                                14,409,100
<PP&E>                                          72,510,776
<DEPRECIATION>                                 (15,639,159)
<TOTAL-ASSETS>                                  72,262,224
<CURRENT-LIABILITIES>                           11,132,137
<BONDS>                                                  0
<PREFERRED-MANDATORY>                                    0
<PREFERRED>                                              0
<COMMON>                                            99,195
<OTHER-SE>                                      50,730,592
<TOTAL-LIABILITY-AND-EQUITY>                    72,262,224
<SALES>                                                  0
<TOTAL-REVENUES>                                45,563,216
<CGS>                                                    0
<TOTAL-COSTS>                                   37,637,133
<OTHER-EXPENSES>                                         0
<LOSS-PROVISION>                                         0
<INTEREST-EXPENSE>                                  23,672
<INCOME-PRETAX>                                  7,949,755
<INCOME-TAX>                                     3,280,000
<INCOME-CONTINUING>                              4,669,755
<DISCONTINUED>                                           0
<EXTRAORDINARY>                                          0
<CHANGES>                                                0
<NET-INCOME>                                     4,669,755
<EPS-PRIMARY>                                          .47
<EPS-DILUTED>                                          .46