
<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
The September 30, 1996 financial information has been restated to reflect CPS as
discontinued operations.  Balance sheet data is not disclosed in the 
accompanying financial statements and thus a value of zero has been shown for
purposes of this financial data schedule.
</LEGEND>
<MULTIPLIER>  1,000
       
<S>                             <C>                     <C>
<PERIOD-TYPE>                   6-MOS                   6-MOS
<FISCAL-YEAR-END>                          MAR-31-1998             MAR-31-1997
<PERIOD-START>                             APR-01-1997             JUL-01-1996
<PERIOD-END>                               SEP-30-1997             SEP-30-1996
<CASH>                                          32,962                       0
<SECURITIES>                                         0                       0
<RECEIVABLES>                                   89,498                       0
<ALLOWANCES>                                         0                       0
<INVENTORY>                                     72,308                       0
<CURRENT-ASSETS>                               196,073                       0
<PP&E>                                         544,238                       0
<DEPRECIATION>                                  83,846                       0
<TOTAL-ASSETS>                                 698,737                       0
<CURRENT-LIABILITIES>                          137,190                       0
<BONDS>                                        207,007                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                           216                       0
<OTHER-SE>                                     252,009                       0
<TOTAL-LIABILITY-AND-EQUITY>                   698,737                       0
<SALES>                                        207,792                  63,131
<TOTAL-REVENUES>                               207,546                  63,021
<CGS>                                          150,444                  43,997
<TOTAL-COSTS>                                  179,849                  53,264
<OTHER-EXPENSES>                                     0                       0
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                              10,527                      82
<INCOME-PRETAX>                                 21,499                  14,164
<INCOME-TAX>                                     6,449                   4,350
<INCOME-CONTINUING>                             14,552                   9,814
<DISCONTINUED>                                     154                      91
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                    14,706                   9,905
<EPS-PRIMARY>                                      .68                     .50
<EPS-DILUTED>                                      .65                     .50
        

</TABLE>
