<ARTICLE>               5
<RESTATED>              
<PERIOD-START>                JAN-01-1997      JAN-01-1997       JAN-01-1997
<PERIOD-TYPE>                 3-MOS            6-MOS              9-MOS
<FISCAL-YEAR-END>             DEC-31-1997      DEC-31-1997       DEC-31-1997
<PERIOD-END>                  MAR-31-1997      JUN-30-1997       SEP-30-1997
       
                                                        
<CASH>                        63,164            22,883             29,646
<SECURITIES>                       0                 0                  0
<RECEIVABLES>                109,889           131,712            126,859
<ALLOWANCES>                   4,577             4,578              4,898
<INVENTORY>                   41,424            41,560             40,009
<CURRENT-ASSETS>             224,861           206,746            208,385
<PP&E>                       420,909           429,600            491,201
<DEPRECIATION>               183,727           187,890            194,284
<TOTAL-ASSETS>               497,634           483,869            558,981
<CURRENT-LIABILITIES>        150,464           153,020            172,637
<BONDS>                      212,869           208,615            234,218
<PREFERRED-MANDATORY>              0                 0                  0
<PREFERRED>                        0                 0                  0
<COMMON>                         223               223                223
<OTHER-SE>                  (109,136)         (119,586)          (105,489)
<TOTAL-LIABILITY-AND-EQUITY> 497,634           485,137            558,981
<SALES>                      149,566           314,523            484,365
<TOTAL-REVENUES>             149,566           314,523            484,365
<CGS>                        104,364           214,679            332,126
<TOTAL-COSTS>                104,364           214,679            332,126
<OTHER-EXPENSES>                   0                 0                  0
<LOSS-PROVISION>                   0                 0                 11
<INTEREST-EXPENSE>             5,257            10,350             16,061
<INCOME-PRETAX>               19,267            47,645             72,347
<INCOME-TAX>                   7,553            18,673             28,273
<INCOME-CONTINUING>           11,714            28,872             44,074
<DISCONTINUED>                     0                 0                  0
<EXTRAORDINARY>                    0                 0                  0
<CHANGES>                          0                 0                  0
<NET-INCOME>                  11,714            28,972             44,074
<EPS-PRIMARY>                    .53              1.34               2.06
<EPS-DILUTED>                    .50              1.27               1.95