<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 12-MOS <FISCAL-YEAR-END> MAR-31-1999 <PERIOD-END> MAR-31-1999 <CASH> 13,500 <SECURITIES> 0 <RECEIVABLES> 357,400 <ALLOWANCES> 0 <INVENTORY> 397,100 <CURRENT-ASSETS> 0 <PP&E> 1,213,600 <DEPRECIATION> (481,300) <TOTAL-ASSETS> 1,684,900 <CURRENT-LIABILITIES> 0 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 43,700 <OTHER-SE> 915,400 <TOTAL-LIABILITY-AND-EQUITY> 1,684,900 <SALES> 0 <TOTAL-REVENUES> 2,926,900 <CGS> 0 <TOTAL-COSTS> 2,472,800 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 20,400 <INCOME-PRETAX> 296,400 <INCOME-TAX> 111,100 <INCOME-CONTINUING> 185,300 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 185,300 <EPS-BASIC> 4.31 <EPS-DILUTED> 4.25