<ARTICLE>5
<LEGEND>  THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM
CONDENSED CONSOLIDATED BALANCE SHEET AS OF MARCH 31, 1996 AND CONSOLIDATED
STATEMENT OF INCOME FOR THE THREE MONTHS THEN ENDED AND IS QUALIFIED IN ITS
ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.

</LEGEND>
<MULTIPLIER> 1,000
       
                                                      
<PERIOD-TYPE>                            3-MOS
<FISCAL-YEAR-END>                                           DEC-31-1996
<PERIOD-END>                                                MAR-31-1996
<CASH>                                                            4,026
<SECURITIES>                                                          0
<RECEIVABLES>                                                    77,935
<ALLOWANCES>                                                          0
<INVENTORY>                                                      51,056
<CURRENT-ASSETS>                                                145,568
<PP&E>                                                          464,640
<DEPRECIATION>                                                  269,341
<TOTAL-ASSETS>                                                  360,415
<CURRENT-LIABILITIES>                                            77,911
<BONDS>                                                         110,115
<COMMON>                                                         10,101
<PREFERRED-MANDATORY>                                                 0
<PREFERRED>                                                      19,928
<OTHER-SE>                                                       96,802
<TOTAL-LIABILITY-AND-EQUITY>                                    360,415
<SALES>                                                         130,643
<TOTAL-REVENUES>                                                130,643
<CGS>                                                           104,935
<TOTAL-COSTS>                                                   119,513
<OTHER-EXPENSES>                                                      0
<LOSS-PROVISION>                                                      0
<INTEREST-EXPENSE>                                                1,987
<INCOME-PRETAX>                                                   9,143
<INCOME-TAX>                                                      3,508
<INCOME-CONTINUING>                                               5,635
<DISCONTINUED>                                                        0
<EXTRAORDINARY>                                                       0
<CHANGES>                                                             0
<NET-INCOME>                                                      5,635
<EPS-PRIMARY>                                                      0.54
<EPS-DILUTED>                                                      0.51