<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM CONDENSED
CONSOLIDATED BALANCE SHEETS AND FROM CONSOLIDATED STATEMENTS OF EARNINGS AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
       
                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               SEP-30-1997
<CASH>                                           5,240
<SECURITIES>                                         0
<RECEIVABLES>                                  526,346
<ALLOWANCES>                                         0
<INVENTORY>                                    334,430
<CURRENT-ASSETS>                               899,067
<PP&E>                                       3,337,060
<DEPRECIATION>                             (1,605,707)
<TOTAL-ASSETS>                               2,873,583
<CURRENT-LIABILITIES>                          738,375
<BONDS>                                        528,521
<PREFERRED-MANDATORY>                           15,610
<PREFERRED>                                          0
<COMMON>                                             0
<OTHER-SE>                                   1,298,352
<TOTAL-LIABILITY-AND-EQUITY>                 2,873,583
<SALES>                                      3,260,267
<TOTAL-REVENUES>                             3,266,047
<CGS>                                        2,495,933
<TOTAL-COSTS>                                  277,714
<OTHER-EXPENSES>                               279,005
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              28,739
<INCOME-PRETAX>                                184,656
<INCOME-TAX>                                    61,890
<INCOME-CONTINUING>                            122,766
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   122,766
<EPS-PRIMARY>                                    $3.93
<EPS-DILUTED>                                        0