<TABLE> <S> <C>

<ARTICLE>                                    5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED BALANCE SHEETS AND CONSOLIDATED STATEMENTS OF OPERATIONS AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<RESTATED>
<MULTIPLIER>                                 1,000

<S>                          <C>              <C>               <C>              <C>
<PERIOD-TYPE>                      9-MOS            6-MOS             3-MOS           12-MOS
<FISCAL-YEAR-END>            DEC-31-1996      DEC-31-1996       DEC-31-1996      DEC-31-1995
<PERIOD-END>                 SEP-30-1996      JUN-30-1996       MAR-31-1996      DEC-31-1995
<CASH>                            49,047           31,785            15,365           13,919
<SECURITIES>                           0                0                 0                0
<RECEIVABLES>                    249,223          242,090           152,863          149,290
<ALLOWANCES>                       7,671            7,201             2,969            2,886
<INVENTORY>                       98,300           98,908            52,120           51,283
<CURRENT-ASSETS>                 448,878          404,486           258,450          252,141
<PP&E>                           877,511          851,256           683,274          670,392
<DEPRECIATION>                   452,037          426,101           348,284          336,578
<TOTAL-ASSETS>                 1,414,729        1,354,140           637,147          630,468
<CURRENT-LIABILITIES>            213,858          163,860           131,118          144,836
<BONDS>                          760,500          768,932            95,500           95,500
<PREFERRED-MANDATORY>              6,174            6,224             3,364            3,364
<PREFERRED>                            0                0             6,158            6,175
<COMMON>                           3,364            3,364                 0                0
<OTHER-SE>                       366,494          351,717           351,515          333,460
<TOTAL-LIABILITY-AND-EQUITY>   1,414,729        1,354,140           637,147          630,468
<SALES>                          713,787          409,563           199,472          752,453
<TOTAL-REVENUES>                 713,787          409,563           199,472          752,453
<CGS>                            278,111          157,694            76,876          273,712
<TOTAL-COSTS>                    278,111          157,694            76,876          273,712
<OTHER-EXPENSES>                       0                0                 0                0
<LOSS-PROVISION>                       0                0                 0                0
<INTEREST-EXPENSE>                13,702            1,040               518            1,124
<INCOME-PRETAX>                   82,685           66,384            31,485          111,567
<INCOME-TAX>                      29,749           24,370            11,807           43,270
<INCOME-CONTINUING>               52,936           42,014            19,678           68,297
<DISCONTINUED>                         0                0                 0                0
<EXTRAORDINARY>                        0                0                 0                0
<CHANGES>                              0                0                 0                0
<NET-INCOME>                      52,936           42,014            19,678           68,297
<EPS-PRIMARY>                       1.77             1.43              0.67             2.30
<EPS-DILUTED>                       1.67             1.33              0.62             2.16


</TABLE>