<TABLE> <S> <C>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM
FORM 10-Q SEPTEMBER 30, 2000 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE
TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> MAR-31-2001
<PERIOD-END> SEP-30-2000
<CASH> 26,408
<SECURITIES> 0
<RECEIVABLES> 579,977<F1>
<ALLOWANCES> 0
<INVENTORY> 83,671
<CURRENT-ASSETS> 0<F2>
<PP&E> 2,477,522
<DEPRECIATION> 1,143,096
<TOTAL-ASSETS> 3,235,093
<CURRENT-LIABILITIES> 0
<BONDS> 1,096,240
0
0
<COMMON> 10,563
<OTHER-SE> 670,295
<TOTAL-LIABILITY-AND-EQUITY> 3,235,093
<SALES> 113,961
<TOTAL-REVENUES> 963,343
<CGS> 65,974
<TOTAL-COSTS> 728,181
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 2,052
<INTEREST-EXPENSE> 44,052
<INCOME-PRETAX> 122,084
<INCOME-TAX> 43,239
<INCOME-CONTINUING> 78,845
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 78,845
<EPS-BASIC> 3.35
<EPS-DILUTED> 3.35
<FN>
<F1>THE VALUE FOR RECEIVABLES REPRESENTS THEIR AMOUNT NET OF THEIR ALLOWANCES.
<F2>AN UNCLASSIFIED BALANCE SHEET EXISTS IN THE REGISTRANT'S FINANCIAL
STATEMENTS.
</FN>
</TABLE>