
<TABLE> <S> <C>

<ARTICLE> 5
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               MAR-31-1999
<CASH>                                         164,381
<SECURITIES>                                    53,475
<RECEIVABLES>                                  126,706
<ALLOWANCES>                                     5,952
<INVENTORY>                                     84,080
<CURRENT-ASSETS>                               450,503
<PP&E>                                         767,947
<DEPRECIATION>                                 341,842
<TOTAL-ASSETS>                                 991,682
<CURRENT-LIABILITIES>                          250,246
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           118
<OTHER-SE>                                     509,062
<TOTAL-LIABILITY-AND-EQUITY>                   991,682
<SALES>                                        419,957
<TOTAL-REVENUES>                               419,957
<CGS>                                          357,382
<TOTAL-COSTS>                                  389,709
<OTHER-EXPENSES>                                 3,563
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               1,635
<INCOME-PRETAX>                                 26,655
<INCOME-TAX>                                     7,730
<INCOME-CONTINUING>                             18,925
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    18,925
<EPS-PRIMARY>                                     0.16
<EPS-DILUTED>                                     0.16
        

</TABLE>
