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

  

<ARTICLE> 5
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   QTR-1
<FISCAL-YEAR-END>                          DEC-31-1995
<PERIOD-START>                             JAN-01-1995
<PERIOD-END>                               MAR-31-1995
<CASH>                                           2,240
<SECURITIES>                                    23,855
<RECEIVABLES>                                  147,471
<ALLOWANCES>                                         0
<INVENTORY>                                     76,598
<CURRENT-ASSETS>                                 7,622
<PP&E>                                         369,220
<DEPRECIATION>                                 174,139
<TOTAL-ASSETS>                                 555,475
<CURRENT-LIABILITIES>                          178,872
<BONDS>                                              0
<COMMON>                                        28,494
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<OTHER-SE>                                           0
<TOTAL-LIABILITY-AND-EQUITY>                   555,475
<SALES>                                        141,427
<TOTAL-REVENUES>                               141,427
<CGS>                                           58,509
<TOTAL-COSTS>                                   58,509
<OTHER-EXPENSES>                                54,308
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               2,318
<INCOME-PRETAX>                                 26,678
<INCOME-TAX>                                     6,003
<INCOME-CONTINUING>                             20,675
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    20,675
<EPS-PRIMARY>                                      .90
<EPS-DILUTED>                                        0