<ARTICLE> 5
<RESTATED>
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               JUN-30-1996
<CASH>                                       4,802,719
<SECURITIES>                                         0
<RECEIVABLES>                                8,713,477
<ALLOWANCES>                                         0
<INVENTORY>                                  1,990,427
<CURRENT-ASSETS>                            15,833,368
<PP&E>                                     118,733,154
<DEPRECIATION>                              33,979,377
<TOTAL-ASSETS>                             143,879,617
<CURRENT-LIABILITIES>                       10,808,012
<BONDS>                                     20,000,000
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                    43,355,988
<OTHER-SE>                                  46,746,623
<TOTAL-LIABILITY-AND-EQUITY>               143,879,617
<SALES>                                              0
<TOTAL-REVENUES>                            24,743,450
<CGS>                                                0
<TOTAL-COSTS>                               16,610,498
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                             444,987
<INCOME-PRETAX>                              7,697,965
<INCOME-TAX>                                 2,875,569
<INCOME-CONTINUING>                          4,638,133
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                 4,638,133
<EPS-PRIMARY>                                    0.358
<EPS-DILUTED>                                    0.355