<ARTICLE> 5
<MULTIPLIER> 1,000
<CURRENCY> DOLLAR

                                        
<PERIOD-TYPE>                              6-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               SEP-30-1999
<EXCHANGE-RATE>                                      1
<CASH>                                          85,700
<SECURITIES>                                         0
<RECEIVABLES>                                  211,400
<ALLOWANCES>                                     5,200
<INVENTORY>                                    130,100
<CURRENT-ASSETS>                               592,400
<PP&E>                                       1,524,000
<DEPRECIATION>                               (902,600)
<TOTAL-ASSETS>                               2,411,400
<CURRENT-LIABILITIES>                          691,000
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
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<COMMON>                                           700
<OTHER-SE>                                     140,500
<TOTAL-LIABILITY-AND-EQUITY>                 2,411,400
<SALES>                                      1,090,700
<TOTAL-REVENUES>                             1,118,400
<CGS>                                          635,700
<TOTAL-COSTS>                                  635,700
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              12,900
<INCOME-PRETAX>                                128,100
<INCOME-TAX>                                    46,100
<INCOME-CONTINUING>                             82,000
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<EXTRAORDINARY>                                      0
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<EPS-BASIC>                                       1.16
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