<ARTICLE> 5
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               SEP-30-1999
<CASH>                                         185,977
<SECURITIES>                                   271,010
<RECEIVABLES>                                  377,205
<ALLOWANCES>                                   (7,451)
<INVENTORY>                                    217,489
<CURRENT-ASSETS>                             1,151,953
<PP&E>                                       2,310,306
<DEPRECIATION>                             (1,013,126)
<TOTAL-ASSETS>                               2,975,302
<CURRENT-LIABILITIES>                          531,634
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                         1,473
<OTHER-SE>                                   1,625,127
<TOTAL-LIABILITY-AND-EQUITY>                 2,975,302
<SALES>                                      1,504,588
<TOTAL-REVENUES>                             1,504,588
<CGS>                                          942,074
<TOTAL-COSTS>                                  942,074
<OTHER-EXPENSES>                               451,926
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                            (29,604)
<INCOME-PRETAX>                                 92,185
<INCOME-TAX>                                    26,420
<INCOME-CONTINUING>                             65,765
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                     (91,774)
<NET-INCOME>                                  (26,009)
<EPS-BASIC>                                     (0.18)
<EPS-DILUTED>                                   (0.17)