<ARTICLE> 5
<LEGEND>
This  schedule  contains  summary  financial   information  extracted  from  the
consolidated  statement of earnings and the  consolidated  balance sheets and is
qualified in its entirety by reference to such financial statements.
</LEGEND>
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-START>                             JAN-01-1996
<PERIOD-END>                               MAR-31-1996
<EXCHANGE-RATE>                                      1
<CASH>                                         201,697
<SECURITIES>                                         0
<RECEIVABLES>                                  191,326
<ALLOWANCES>                                    19,401
<INVENTORY>                                     23,773
<CURRENT-ASSETS>                               403,773
<PP&E>                                       1,372,050
<DEPRECIATION>                                 584,550
<TOTAL-ASSETS>                               1,346,561
<CURRENT-LIABILITIES>                          204,332
<BONDS>                                        355,512
<COMMON>                                        20,405
<PREFERRED-MANDATORY>                           29,267
<PREFERRED>                                          0
<OTHER-SE>                                     402,140
<TOTAL-LIABILITY-AND-EQUITY>                 1,346,561
<SALES>                                        343,341
<TOTAL-REVENUES>                               419,220
<CGS>                                          271,198
<TOTAL-COSTS>                                  329,331
<OTHER-EXPENSES>                                21,417
<LOSS-PROVISION>                                 6,826
<INTEREST-EXPENSE>                               9,142
<INCOME-PRETAX>                                 52,504
<INCOME-TAX>                                    19,622
<INCOME-CONTINUING>                             32,882
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    32,882
<EPS-PRIMARY>                                     1.61
<EPS-DILUTED>                                     1.61