
<TABLE> <S> <C>

 <ARTICLE>            5
 <LEGEND>             This schedule contains summary financial information
                      extracted from the Company's financial statements for
                      the quarterly period ended March 31, 2000 and is
	                     qualified in its entirety by reference to such financial
                      statements.
 </LEGEND>
 <MULTIPLIER>         1,000

 <S>                                        <C>
 <PERIOD-TYPE>                              3-MOS
 <FISCAL-YEAR-END>                          DEC-31-2000
 <PERIOD-END>                               MAR-31-2000
 <CASH>                                          52,681
 <SECURITIES>                                         0
 <RECEIVABLES>                                   63,066
 <ALLOWANCES>                                     6,118
 <INVENTORY>                                     20,989
 <CURRENT-ASSETS>                               147,211
 <PP&E>                                         280,103
 <DEPRECIATION>                                 166,742
 <TOTAL-ASSETS>                                 387,274
 <CURRENT-LIABILITIES>                           90,911
 <BONDS>                                        106,439
 <COMMON>                                        37,907
 <PREFERRED-MANDATORY>                                0
 <PREFERRED>                                          0
 <OTHER-SE>                                     134,569
 <TOTAL-LIABILITY-AND-EQUITY>                   387,274
 <SALES>                                        176,702
 <TOTAL-REVENUES>                               176,702
 <CGS>                                          108,995
 <TOTAL-COSTS>                                  108,995
 <OTHER-EXPENSES>                                     0
 <LOSS-PROVISION>                                     0
 <INTEREST-EXPENSE>                               1,708
 <INCOME-PRETAX>                                 18,888
 <INCOME-TAX>                                     7,366
 <INCOME-CONTINUING>                             11,522
 <DISCONTINUED>                                       0
 <EXTRAORDINARY>                                      0
 <CHANGES>                                            0
 <NET-INCOME>                                    11,522
 <EPS-BASIC>                                     0.41
 <EPS-DILUTED>                                     0.40


</TABLE>
