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<MULTIPLIER> 1000
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          FEB-28-1998
<PERIOD-END>                               AUG-31-1997
<CASH>                                           20083
<SECURITIES>                                         0
<RECEIVABLES>                                    19224
<ALLOWANCES>                                       998
<INVENTORY>                                       8196
<CURRENT-ASSETS>                                 50725
<PP&E>                                           94237
<DEPRECIATION>                                   56351
<TOTAL-ASSETS>                                   97146
<CURRENT-LIABILITIES>                            11874
<BONDS>                                            349
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                         53125
<OTHER-SE>                                      120166
<TOTAL-LIABILITY-AND-EQUITY>                     97146
<SALES>                                          38309
<TOTAL-REVENUES>                                 38309
<CGS>                                            26562
<TOTAL-COSTS>                                    26562
<OTHER-EXPENSES>                                  7797
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                  19
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<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                      2650
<EPS-PRIMARY>                                      .16
<EPS-DILUTED>                                      .16
        

</TABLE>
