<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from the balance
sheet, income statement, and footnotes and is qualified in its entirety by
reference to such financial statements.
</LEGEND>
<RESTATED> 
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-END>                               SEP-30-1997
<CASH>                                              62
<SECURITIES>                                    17,138
<RECEIVABLES>                                   13,112
<ALLOWANCES>                                         0
<INVENTORY>                                      6,449
<CURRENT-ASSETS>                                38,257
<PP&E>                                          36,451
<DEPRECIATION>                                (15,489)
<TOTAL-ASSETS>                                  60,359
<CURRENT-LIABILITIES>                           14,687
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                         6,341
<OTHER-SE>                                      32,301
<TOTAL-LIABILITY-AND-EQUITY>                    60,359
<SALES>                                         25,466
<TOTAL-REVENUES>                                25,466
<CGS>                                           21,440
<TOTAL-COSTS>                                   21,440
<OTHER-EXPENSES>                                 1,693
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 510
<INCOME-PRETAX>                                  1,823
<INCOME-TAX>                                       683
<INCOME-CONTINUING>                              1,140
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     1,140
<EPS-PRIMARY>                                      .09
<EPS-DILUTED>                                      .09