<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>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-START>                             JAN-01-1996
<PERIOD-END>                               JUN-30-1996
<EXCHANGE-RATE>                                      1
<CASH>                                         192,060
<SECURITIES>                                         0
<RECEIVABLES>                                  130,827
<ALLOWANCES>                                    21,886
<INVENTORY>                                     45,770
<CURRENT-ASSETS>                               363,776
<PP&E>                                       1,492,619
<DEPRECIATION>                                 619,151
<TOTAL-ASSETS>                               1,409,626
<CURRENT-LIABILITIES>                          187,614
<BONDS>                                        371,459
<COMMON>                                        22,351
<PREFERRED-MANDATORY>                           29,611
<PREFERRED>                                          0
<OTHER-SE>                                     437,069
<TOTAL-LIABILITY-AND-EQUITY>                 1,409,626
<SALES>                                        509,455
<TOTAL-REVENUES>                               662,334
<CGS>                                          396,828
<TOTAL-COSTS>                                  512,501
<OTHER-EXPENSES>                                47,973
<LOSS-PROVISION>                                10,790
<INTEREST-EXPENSE>                              18,127
<INCOME-PRETAX>                                 72,943
<INCOME-TAX>                                    27,371
<INCOME-CONTINUING>                             45,572
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    45,572
<EPS-PRIMARY>                                     2.05<F1>
<EPS-DILUTED>                                     2.04<F2>
<FN>
<F1>   EPS - Primary is EPS Basic per SFAS 128
<F2>   EPS - Fully Diluted is EPS - Diluted per SFAS 128
</FN>