<ARTICLE>                         5
<MULTIPLIER>                      1,000
       
                               
<PERIOD-TYPE>                     3-MOS
<FISCAL-YEAR-END>                 DEC-31-1996
<PERIOD-START>                    JAN-01-1996
<PERIOD-END>                      MAR-31-1996
<CASH>                            5,606
<SECURITIES>                      0
<RECEIVABLES>                     130,483
<ALLOWANCES>                      4,308
<INVENTORY>                       183,339
<CURRENT-ASSETS>                  395,474
<PP&E>                            1,310,325
<DEPRECIATION>                    601,396
<TOTAL-ASSETS>                    1,658,983
<CURRENT-LIABILITIES>             192,068
<BONDS>                           447,247
<COMMON>                          156,752
<PREFERRED-MANDATORY>             0
<PREFERRED>                       0
<OTHER-SE>                        633,216
<TOTAL-LIABILITY-AND-EQUITY>      1,658,983
<SALES>                           293,980
<TOTAL-REVENUES>                  293,980
<CGS>                             225,674
<TOTAL-COSTS>                     225,674
<OTHER-EXPENSES>                  15,914
<LOSS-PROVISION>                  0
<INTEREST-EXPENSE>                7,146
<INCOME-PRETAX>                   45,246
<INCOME-TAX>                      13,769
<INCOME-CONTINUING>               31,477
<DISCONTINUED>                    0
<EXTRAORDINARY>                   0
<CHANGES>                         0
<NET-INCOME>                      31,477
<EPS-PRIMARY>                     1.05
<EPS-DILUTED>                     1.05