<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>                                         191,380
<SECURITIES>                                         0
<RECEIVABLES>                                  120,780
<ALLOWANCES>                                    20,050
<INVENTORY>                                     42,288
<CURRENT-ASSETS>                               349,880
<PP&E>                                       1,396,730
<DEPRECIATION>                                 597,224
<TOTAL-ASSETS>                               1,314,336
<CURRENT-LIABILITIES>                          166,968
<BONDS>                                        351,356
<COMMON>                                        20,429
<PREFERRED-MANDATORY>                           29,275
<PREFERRED>                                          0
<OTHER-SE>                                     406,195
<TOTAL-LIABILITY-AND-EQUITY>                 1,314,336
<SALES>                                        480,977
<TOTAL-REVENUES>                               633,856
<CGS>                                          380,098
<TOTAL-COSTS>                                  495,771
<OTHER-EXPENSES>                                43,307
<LOSS-PROVISION>                                 9,733
<INTEREST-EXPENSE>                              16,663
<INCOME-PRETAX>                                 68,382
<INCOME-TAX>                                    25,576
<INCOME-CONTINUING>                             42,806
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    42,806
<EPS-PRIMARY>                                     2.10
<EPS-DILUTED>                                     2.10