<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-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               MAR-31-1999
<EXCHANGE-RATE>                                      1
<CASH>                                         178,818
<SECURITIES>                                         0
<RECEIVABLES>                                  174,985
<ALLOWANCES>                                    16,942
<INVENTORY>                                     37,837
<CURRENT-ASSETS>                               378,618
<PP&E>                                       1,731,589
<DEPRECIATION>                                 771,989
<TOTAL-ASSETS>                               1,502,033
<CURRENT-LIABILITIES>                          159,936
<BONDS>                                        384,307
<COMMON>                                        22,635
<PREFERRED-MANDATORY>                           29,368
<PREFERRED>                                          0
<OTHER-SE>                                     547,506
<TOTAL-LIABILITY-AND-EQUITY>                 1,502,033
<SALES>                                        280,283
<TOTAL-REVENUES>                               344,829
<CGS>                                          197,994
<TOTAL-COSTS>                                  255,495
<OTHER-EXPENSES>                                25,673
<LOSS-PROVISION>                                 2,573
<INTEREST-EXPENSE>                               8,779
<INCOME-PRETAX>                                 52,309
<INCOME-TAX>                                    20,013
<INCOME-CONTINUING>                             32,296
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    32,296
<EPS-PRIMARY>                                     1.43<F1>
<EPS-DILUTED>                                     1.42
<FN>
<F1>     EPS - Primary is EPS Basic per SFAS 128
</FN>