<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-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               MAR-31-1997
<EXCHANGE-RATE>                                      1
<CASH>                                         175,563
<SECURITIES>                                         0
<RECEIVABLES>                                  171,262
<ALLOWANCES>                                    18,883
<INVENTORY>                                     43,343
<CURRENT-ASSETS>                               408,254
<PP&E>                                       1,558,164
<DEPRECIATION>                                 652,419
<TOTAL-ASSETS>                               1,493,531
<CURRENT-LIABILITIES>                          238,139
<BONDS>                                        365,767
<COMMON>                                        22,398
<PREFERRED-MANDATORY>                           29,301
<PREFERRED>                                          0
<OTHER-SE>                                     459,546
<TOTAL-LIABILITY-AND-EQUITY>                 1,493,531
<SALES>                                        320,681
<TOTAL-REVENUES>                               385,063
<CGS>                                          244,487
<TOTAL-COSTS>                                  300,034
<OTHER-EXPENSES>                                24,161
<LOSS-PROVISION>                                 6,865
<INTEREST-EXPENSE>                               9,501
<INCOME-PRETAX>                                 44,502
<INCOME-TAX>                                    16,540
<INCOME-CONTINUING>                             27,962
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    27,962
<EPS-PRIMARY>                                     1.26<F1>
<EPS-DILUTED>                                     1.25<F2>
<FN>
<F1>   EPS - Primary is EPS Basic per SFAS 128
<F2>   EPS - Fully Diluted is EPS - Diluted per SFAS 128
</FN>