<ARTICLE> 5
       
                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1995
<PERIOD-END>                               SEP-30-1995
<CASH>                                          44,226
<SECURITIES>                                    16,000
<RECEIVABLES>                                   35,537
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                                95,663
<PP&E>                                         555,094
<DEPRECIATION>                               (240,747)
<TOTAL-ASSETS>                                 510,283
<CURRENT-LIABILITIES>                           67,722
<BONDS>                                              0
<COMMON>                                        57,914
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<OTHER-SE>                                     384,947
<TOTAL-LIABILITY-AND-EQUITY>                   510,283
<SALES>                                        135,113
<TOTAL-REVENUES>                               147,250
<CGS>                                                0
<TOTAL-COSTS>                                   51,709
<OTHER-EXPENSES>                                64,837
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               2,771
<INCOME-PRETAX>                                 28,004
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                             28,004
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    28,004
<EPS-PRIMARY>                                      .05
<EPS-DILUTED>                                      .05