<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM
FORM 10-Q JUNE 30, 2000 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE
TO SUCH FINANCIAL STATEMENTS.

<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          MAR-31-2001
<PERIOD-END>                               JUN-30-2000
<CASH>                                           9,056
<SECURITIES>                                         0
<RECEIVABLES>                                  523,672
<ALLOWANCES>                                         0
<INVENTORY>                                     87,531
<CURRENT-ASSETS>                                     0
<PP&E>                                       2,525,474
<DEPRECIATION>                               1,173,547
<TOTAL-ASSETS>                               3,213,681
<CURRENT-LIABILITIES>                                0
<BONDS>                                      1,123,562
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        10,563
<OTHER-SE>                                     642,268
<TOTAL-LIABILITY-AND-EQUITY>                 3,213,681
<SALES>                                         60,146
<TOTAL-REVENUES>                               459,562
<CGS>                                           33,197
<TOTAL-COSTS>                                  344,241
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                   882
<INTEREST-EXPENSE>                              22,810
<INCOME-PRETAX>                                 58,432
<INCOME-TAX>                                    20,820
<INCOME-CONTINUING>                             37,612
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    37,612
<EPS-BASIC>                                       1.58
<EPS-DILUTED>                                     1.58

<F1>THE VALUE FOR RECEIVABLES REPRESENTS THEIR AMOUNT NET OF THEIR ALLOWANCES.
<F2>AN UNCLASSIFIED BALANCE SHEET EXISTS IN THE REGISTRANT'S FINANCIAL STATEMENTS.