<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED CONDENSED BALANCE SHEET AT DECEMBER 31, 1996, SEPTEMBER 30, 1996,
JUNE 30, 1996 AND MARCH 31, 1996 AND CONSOLIDATED CONDENSED STATEMENT OF
OPERATIONS FOR THE THREE MONTHS ENDED DECEMBER 31, 1996, YEAR ENDED SEPTEMBER
30, 1996, NINE MONTHS ENDED JUNE 30, 1996 AND SIX MONTHS ENDED MARCH 31, 1996
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<RESTATED> 
       
<S>                             <C>                     <C>                     <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   12-MOS                   9-MOS                   6-MOS
<FISCAL-YEAR-END>                          SEP-30-1997             SEP-30-1996             SEP-30-1996             SEP-30-1996
<PERIOD-START>                             SEP-30-1996             OCT-01-1995             OCT-01-1995             OCT-01-1995
<PERIOD-END>                               DEC-31-1996<F1>         SEP-30-1996<F1>         JUN-30-1996<F1>         MAR-31-1996<F1>
<CASH>                                          63,836                  82,291                 152,987                  95,241
<SECURITIES>                                    68,585                  65,655                  51,052                  94,192
<RECEIVABLES>                                  109,806                  92,728                 111,253                 149,539
<ALLOWANCES>                                         0                   2,586                       0                       0
<INVENTORY>                                     51,039                  58,005                  82,527                  79,512
<CURRENT-ASSETS>                               307,299                 310,055                 412,322                 432,105
<PP&E>                                         880,809                 834,852                 780,952                 697,443
<DEPRECIATION>                                 299,786                 267,558                 222,616                 195,361
<TOTAL-ASSETS>                                 916,868                 906,672               1,003,837                 967,527
<CURRENT-LIABILITIES>                          202,256                 196,096                 222,730                 214,950
<BONDS>                                        170,129                 172,037                 178,031                 129,790
<PREFERRED-MANDATORY>                                0                       0                       0                       0
<PREFERRED>                                          0                       0                       0                       0
<COMMON>                                             5                       5                       5                       5
<OTHER-SE>                                     460,843                 458,794                 517,629                 538,517
<TOTAL-LIABILITY-AND-EQUITY>                   918,868                 908,672               1,003,837                 967,527
<SALES>                                        251,588                 991,118                 795,711                 557,430
<TOTAL-REVENUES>                               251,588                 991,118                 795,711                 557,430
<CGS>                                          215,774                 887,464                 658,231                 431,319
<TOTAL-COSTS>                                  215,774                 887,464                 658,231                 431,319
<OTHER-EXPENSES>                                23,731                  99,161                  76,110                  52,260
<LOSS-PROVISION>                                     0                       0                       0                       0
<INTEREST-EXPENSE>                               3,628                  12,897                   9,113                   6,093
<INCOME-PRETAX>                                  8,455                 (8,404)                  52,257                  67,758
<INCOME-TAX>                                     2,668                  34,582                  31,309                  23,900
<INCOME-CONTINUING>                              5,787                (42,986)                  20,948                  43,858
<DISCONTINUED>                                       0                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0                       0
<CHANGES>                                            0                       0                       0                       0
<NET-INCOME>                                     5,787                (42,986)                  20,948                  43,858
<EPS-PRIMARY>                                     0.12                  (0.92)                    0.45                    0.94
<EPS-DILUTED>                                     0.12                  (0.92)                    0.44                    0.91
<FN>
<F1>AMENDED AND RESTATED
</FN>
        

</TABLE>