<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
UNAUDITED, CONSOLIDATED CONDENSED BALANCE SHEETS AS OF JUNE 30, 1996 AND THE
UNAUDITED, CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS FOR THE SIX MONTHS
THEN ENDED.  THIS SCHEDULE IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
UNAUDITED, CONSOLIDATED CONDENSED FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               JUN-30-1996
<CASH>                                          17,968
<SECURITIES>                                     7,240
<RECEIVABLES>                                   77,318
<ALLOWANCES>                                     1,278
<INVENTORY>                                     43,706
<CURRENT-ASSETS>                               151,091
<PP&E>                                         315,477
<DEPRECIATION>                                 144,679
<TOTAL-ASSETS>                                 353,666
<CURRENT-LIABILITIES>                           87,389
<BONDS>                                          2,858
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        14,280
<OTHER-SE>                                     221,768
<TOTAL-LIABILITY-AND-EQUITY>                   353,666
<SALES>                                        259,015
<TOTAL-REVENUES>                               259,375
<CGS>                                          206,935
<TOTAL-COSTS>                                  217,296
<OTHER-EXPENSES>                                 5,543<F1>
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 903
<INCOME-PRETAX>                                 35,633
<INCOME-TAX>                                    13,095
<INCOME-CONTINUING>                             22,538
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    22,538
<EPS-PRIMARY>                                      .78
<EPS-DILUTED>                                        0
<FN>
<F1>OTHER EXPENSES INCLUDE MISCELLANEOUS EXPENSE.
</FN>