<ARTICLE> 5
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               MAR-31-1999
<CASH>                                          30,040
<SECURITIES>                                         0
<RECEIVABLES>                                  181,447
<ALLOWANCES>                                   (5,686)
<INVENTORY>                                    108,133
<CURRENT-ASSETS>                               345,926
<PP&E>                                         678,076
<DEPRECIATION>                               (333,680)
<TOTAL-ASSETS>                                 835,736
<CURRENT-LIABILITIES>                          285,594
<BONDS>                                         95,722
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           363
<OTHER-SE>                                     404,960
<TOTAL-LIABILITY-AND-EQUITY>                   835,736
<SALES>                                        198,227
<TOTAL-REVENUES>                               198,227
<CGS>                                          124,085
<TOTAL-COSTS>                                  173,991
<OTHER-EXPENSES>                                49,906
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                             (2,620)
<INCOME-PRETAX>                                 22,123
<INCOME-TAX>                                     7,854
<INCOME-CONTINUING>                             14,269
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    14,269
<EPS-PRIMARY>                                     0.39<F1>
<EPS-DILUTED>                                     0.39
<FN>
<F1>In August 1998, the Company effected a two-for-one stock split. Prior
Financial Data Schedules have not been restated for this stock split.
</FN>