<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE MARCH
31, 1998 FINANCIAL STATEMENTS AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER>     1,000
       
                             
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          MAR-31-1998
<PERIOD-START>                             APR-01-1997
<PERIOD-END>                               MAR-31-1998
<CASH>                                          56,076
<SECURITIES>                                         0
<RECEIVABLES>                                   85,543
<ALLOWANCES>                                         0
<INVENTORY>                                     76,139
<CURRENT-ASSETS>                               223,300
<PP&E>                                         569,406
<DEPRECIATION>                                  98,267
<TOTAL-ASSETS>                                 736,011
<CURRENT-LIABILITIES>                          100,664
<BONDS>                                        251,560
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           219
<OTHER-SE>                                     279,666
<TOTAL-LIABILITY-AND-EQUITY>                   736,011
<SALES>                                        426,893
<TOTAL-REVENUES>                               426,655
<CGS>                                          311,641
<TOTAL-COSTS>                                  370,191
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              20,536
<INCOME-PRETAX>                                 46,114
<INCOME-TAX>                                    13,833
<INCOME-CONTINUING>                             31,254
<DISCONTINUED>                                     154
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    31,408
<EPS-PRIMARY>                                     1.46
<EPS-DILUTED>                                     1.36