<ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE CONSOLIDATED FINANCIAL STATEMENTS AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH CONSOLIDATED FINANCIAL STATEMENTS AND NOTES. </LEGEND> <MULTIPLIER> 1,000 <PERIOD-TYPE> 3-MOS <FISCAL-YEAR-END> DEC-31-1999 <PERIOD-END> MAR-31-1999 <CASH> 46,912 <SECURITIES> 81,936 <RECEIVABLES> 356,683 <ALLOWANCES> (17,746) <INVENTORY> 259,493 <CURRENT-ASSETS> 834,449 <PP&E> 1,222,632 <DEPRECIATION> (997,113) <TOTAL-ASSETS> 1,220,130 <CURRENT-LIABILITIES> 402,977 <BONDS> 2,255 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 419 <OTHER-SE> 721,378 <TOTAL-LIABILITY-AND-EQUITY> 1,220,130 <SALES> 401,974 <TOTAL-REVENUES> 401,974 <CGS> 285,400 <TOTAL-COSTS> 285,400 <OTHER-EXPENSES> 107,000 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 800 <INCOME-PRETAX> 10,700 <INCOME-TAX> 4,600 <INCOME-CONTINUING> 6,100 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 6,100 <EPS-PRIMARY> 0.16 <EPS-DILUTED> 0.16