<ARTICLE> 5
<MULTIPLIER> 1,000
       
                                                  
<PERIOD-TYPE>                   3-MOS                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1995             DEC-31-1995
<PERIOD-START>                             APR-01-1995             JAN-01-1995
<PERIOD-END>                               JUN-30-1995             JUN-30-1995
<CASH>                                          15,604                  15,604
<SECURITIES>                                   155,285		       155,285
<RECEIVABLES>                                  214,563                 214,563      
<ALLOWANCES>                                         0                       0
<INVENTORY>                                    160,240                 160,240     
<CURRENT-ASSETS>                               561,215                 561,215
<PP&E>                                       2,972,117               2,972,117        
<DEPRECIATION>                               1,229,756               1,229,756        
<TOTAL-ASSETS>                               2,857,810               2,857,810        
<CURRENT-LIABILITIES>                          261,606                 261,606     
<BONDS>                                        934,104                 934,104        
<COMMON>                                        38,262                  38,262     
<PREFERRED-MANDATORY>                           74,556                  74,556     
<PREFERRED>                                    193,225                 193,225      
<OTHER-SE>                                     763,023                 763,023      
<TOTAL-LIABILITY-AND-EQUITY>                 2,857,810               2,857,810        
<SALES>                                        486,836                 936,314        
<TOTAL-REVENUES>                               486,836                 936,314        
<CGS>                                          297,815                 582,592        
<TOTAL-COSTS>                                  369,156                 721,381      
<OTHER-EXPENSES>                                (5,577)                 (8,442)     
<LOSS-PROVISION>                                     0                       0 
<INTEREST-EXPENSE>                              20,310                  43,614     
<INCOME-PRETAX>                                102,947                 179,761     
<INCOME-TAX>                                    36,935                  66,512     
<INCOME-CONTINUING>                             59,831                 104,884     
<DISCONTINUED>                                       0                       0 
<EXTRAORDINARY>                                      0                  (6,084)
<CHANGES>                                            0                       0 
<NET-INCOME>                                    59,831                   98,800    
<EPS-PRIMARY>                                    $1.35                    $2.22  
<EPS-DILUTED>                                    $1.31                    $2.16