<ARTICLE>                     5
<LEGEND>                      This   schedule    contains   summary    financial
                              information  extracted from  Consolidated  Summary
                              Financial  Statements  and Notes  included in this
                              Form  10-Q and is  qualified  in its  entirety  by
                              reference to such financial statements.
</LEGEND>
<MULTIPLIER>                  1,000
<PERIOD-END>                  MAR-31-1998
<PERIOD-TYPE>                 3-MOS
<FISCAL-YEAR-END>             DEC-31-1998
       
                           
<CASH>                              22,300
<SECURITIES>                             0
<RECEIVABLES>                      168,800
<ALLOWANCES>                        (2,400)
<INVENTORY>                        260,300
<CURRENT-ASSETS>                   615,600
<PP&E>                           2,453,000
<DEPRECIATION>                  (1,276,700)
<TOTAL-ASSETS>                   2,587,100
<CURRENT-LIABILITIES>              328,600
<BONDS>                            630,800
<PREFERRED-MANDATORY>                    0
<PREFERRED>                              0
<COMMON>                           117,000
<OTHER-SE>                       1,136,600
<TOTAL-LIABILITY-AND-EQUITY>     2,587,100
<SALES>                            548,300
<TOTAL-REVENUES>                   548,300
<CGS>                              500,300
<TOTAL-COSTS>                      577,400
<OTHER-EXPENSES>                         0
<LOSS-PROVISION>                         0
<INTEREST-EXPENSE>                   9,700
<INCOME-PRETAX>                    (38,800)
<INCOME-TAX>                       (12,500)
<INCOME-CONTINUING>                (25,100)
<DISCONTINUED>                           0
<EXTRAORDINARY>                          0
<CHANGES>                                0
<NET-INCOME>                       (25,100)
<EPS-PRIMARY>                         (.23)
<EPS-DILUTED>                         (.23)