<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 12-MOS <FISCAL-YEAR-END> MAR-31-1998 <PERIOD-END> MAR-31-1998 <CASH> 3,100 <SECURITIES> 0 <RECEIVABLES> 390,500 <ALLOWANCES> 0 <INVENTORY> 342,600 <CURRENT-ASSETS> 0 <PP&E> 1,201,900 <DEPRECIATION> (475,000) <TOTAL-ASSETS> 1,573,900 <CURRENT-LIABILITIES> 0 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 43,500 <OTHER-SE> 844,000 <TOTAL-LIABILITY-AND-EQUITY> 1,573,900 <SALES> 0 <TOTAL-REVENUES> 2,473,000 <CGS> 0 <TOTAL-COSTS> 2,054,000 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 20,900 <INCOME-PRETAX> 165,900 <INCOME-TAX> 62,200 <INCOME-CONTINUING> 103,700 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 103,700 <EPS-PRIMARY> 2.41 <EPS-DILUTED> 2.36