<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED STATEMENT OF INCOME AND THE CONSOLIDATED BALANCE SHEET AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
       
                             
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               DEC-31-1996
<CASH>                                          21,900
<SECURITIES>                                         0
<RECEIVABLES>                                  497,500
<ALLOWANCES>                                         0
<INVENTORY>                                     12,500
<CURRENT-ASSETS>                               606,500
<PP&E>                                       4,650,000
<DEPRECIATION>                               3,317,400
<TOTAL-ASSETS>                               1,939,100
<CURRENT-LIABILITIES>                          551,100
<BONDS>                                        778,400
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                       454,100
<OTHER-SE>                                     293,400
<TOTAL-LIABILITY-AND-EQUITY>                 1,939,100
<SALES>                                        945,800
<TOTAL-REVENUES>                               966,600
<CGS>                                          453,200
<TOTAL-COSTS>                                  639,600
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              52,300
<INCOME-PRETAX>                                212,700
<INCOME-TAX>                                   (7,300)
<INCOME-CONTINUING>                            220,000
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   220,000
<EPS-PRIMARY>                                     2.26
<EPS-DILUTED>                                     2.26