<ARTICLE> 5
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          MAR-31-1999
<PERIOD-END>                               JUN-30-1998
<CASH>                                           2,400
<SECURITIES>                                         0
<RECEIVABLES>                                  338,700
<ALLOWANCES>                                         0
<INVENTORY>                                    358,600
<CURRENT-ASSETS>                                     0
<PP&E>                                       1,138,900
<DEPRECIATION>                               (431,200)
<TOTAL-ASSETS>                               1,529,200
<CURRENT-LIABILITIES>                                0
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        43,500
<OTHER-SE>                                     889,800
<TOTAL-LIABILITY-AND-EQUITY>                 1,529,200
<SALES>                                              0
<TOTAL-REVENUES>                               711,500
<CGS>                                                0
<TOTAL-COSTS>                                  596,800
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               4,500
<INCOME-PRETAX>                                 92,500
<INCOME-TAX>                                    34,700
<INCOME-CONTINUING>                             57,800
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    57,800
<EPS-PRIMARY>                                     1.33
<EPS-DILUTED>                                     1.31