WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE>        5
<LEGEND>         This schedule contains summary financial information extracted
                 from the Company's financial statements for the quarterly
                 period ended June 30, 2000 and is qualified in its entirety by
                 reference to such financial statements.
</LEGEND>
<MULTIPLIER>     1,000

<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-2000
<PERIOD-END>                               JUN-30-2000
<CASH>                                          53,411
<SECURITIES>                                         0
<RECEIVABLES>                                   60,375
<ALLOWANCES>                                     5,685
<INVENTORY>                                     21,185
<CURRENT-ASSETS>                               149,490
<PP&E>                                         285,758
<DEPRECIATION>                                 170,429
<TOTAL-ASSETS>                                 390,877
<CURRENT-LIABILITIES>                           84,552
<BONDS>                                        106,441
<COMMON>                                        37,907
                                0
                                          0
<OTHER-SE>                                     144,105
<TOTAL-LIABILITY-AND-EQUITY>                   390,877
<SALES>                                        348,393
<TOTAL-REVENUES>                               348,393
<CGS>                                          211,922
<TOTAL-COSTS>                                  307,049
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               3,518
<INCOME-PRETAX>                                 39,173
<INCOME-TAX>                                    15,277
<INCOME-CONTINUING>                             23,896
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    23,896
<EPS-BASIC>                                     0.84
<EPS-DILUTED>                                     0.83
</TABLE

</TABLE>



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