<TABLE> <S> <C>

<ARTICLE> 5
<RESTATED> 
       
<S>                             <C>                     <C>                     <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   6-MOS                   9-MOS                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1996             DEC-31-1996             DEC-31-1996             DEC-31-1996
<PERIOD-END>                               MAR-31-1996             JUN-30-1996             SEP-30-1996             DEC-31-1996
<CASH>                                       6,000,000               5,000,000              13,200,000               9,800,000
<SECURITIES>                                         0                       0                       0                       0
<RECEIVABLES>                              143,800,000             147,100,000             166,200,000             153,900,000
<ALLOWANCES>                                 3,400,000               3,500,000               3,800,000               4,700,000
<INVENTORY>                                107,600,000             108,300,000             117,700,000             134,400,000
<CURRENT-ASSETS>                           281,100,000             287,000,000             321,900,000             325,800,000
<PP&E>                                   1,453,500,000           1,544,300,000           1,555,500,000           1,619,800,000
<DEPRECIATION>                             696,300,000             716,900,000             738,300,000             756,300,000
<TOTAL-ASSETS>                           1,160,900,000           1,212,500,000           1,278,700,000           1,290,200,000
<CURRENT-LIABILITIES>                      134,800,000             143,200,000             169,800,000             166,800,000
<BONDS>                                    411,600,000             457,200,000             491,300,000             499,400,000
<COMMON>                                    23,700,000              23,500,000              23,400,000              23,400,000
<PREFERRED-MANDATORY>                                0                       0                       0                       0
<PREFERRED>                                          0                       0                       0                       0
<OTHER-SE>                                 444,000,000             438,900,000             440,800,000             445,700,000
<TOTAL-LIABILITY-AND-EQUITY>             1,160,900,000           1,212,500,000           1,278,700,000           1,290,200,000
<SALES>                                    277,700,000             554,300,000             863,600,000           1,158,600,000
<TOTAL-REVENUES>                           281,000,000             560,100,000             872,900,000           1,172,000,000
<CGS>                                      202,000,000             405,200,000             629,500,000             843,000,000
<TOTAL-COSTS>                              260,400,000             519,800,000             807,900,000           1,084,300,000
<OTHER-EXPENSES>                               400,000               1,700,000               5,100,000               6,200,000
<LOSS-PROVISION>                             3,400,000               3,500,000                 900,000                 500,000
<INTEREST-EXPENSE>                           7,800,000              16,200,000              24,900,000              33,900,000
<INCOME-PRETAX>                             12,400,000              18,900,000              34,100,000              47,100,000
<INCOME-TAX>                                 4,500,000               7,100,000              12,800,000              17,000,000
<INCOME-CONTINUING>                          7,900,000              11,800,000              21,300,000              30,100,000
<DISCONTINUED>                                       0                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0                       0
<CHANGES>                                            0                       0                       0                       0
<NET-INCOME>                                 7,900,000              11,800,000              21,300,000              30,100,000
<EPS-PRIMARY>                                      .33                     .50                     .91                    1.28
<EPS-DILUTED>                                      .33                     .50                     .90                    1.27
        

</TABLE>