<ARTICLE> 5 <MULTIPLIER> 1,000 <CURRENCY> US DOLLARS <PERIOD-TYPE> 12-MOS <FISCAL-YEAR-END> MAY-31-1998 <PERIOD-START> JUN-01-1997 <PERIOD-END> MAY-31-1998 <EXCHANGE-RATE> 1 <CASH> 64,561 <SECURITIES> 7 <RECEIVABLES> 124,838 <ALLOWANCES> 0 <INVENTORY> 133,134 <CURRENT-ASSETS> 329,064 <PP&E> 489,303 <DEPRECIATION> 293,440 <TOTAL-ASSETS> 551,610 <CURRENT-LIABILITIES> 105,300 <BONDS> 162,573 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 37,053 <OTHER-SE> 167,767 <TOTAL-LIABILITY-AND-EQUITY> 551,610 <SALES> 747,402 <TOTAL-REVENUES> 752,913 <CGS> 637,267 <TOTAL-COSTS> 637,267 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 12,548 <INCOME-PRETAX> 55,437 <INCOME-TAX> 16,355 <INCOME-CONTINUING> 39,082 <DISCONTINUED> 0 <EXTRAORDINARY> (5,192) <CHANGES> 0 <NET-INCOME> 33,890 <EPS-PRIMARY> 0.93 <EPS-DILUTED> 0.91