<TABLE> <S> <C>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
FINANCIAL STATEMENTS FILED AS PART OF THE COMPANY'S 10-Q 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-START> APR-01-2000
<PERIOD-END> SEP-30-2000
<CASH> 5,880
<SECURITIES> 0
<RECEIVABLES> 117,980
<ALLOWANCES> 510
<INVENTORY> 0
<CURRENT-ASSETS> 146,707
<PP&E> 503,455
<DEPRECIATION> 185,586
<TOTAL-ASSETS> 488,231
<CURRENT-LIABILITIES> 84,264
<BONDS> 172,500
0
0
<COMMON> 6,004
<OTHER-SE> 194,311
<TOTAL-LIABILITY-AND-EQUITY> 488,231
<SALES> 204,503
<TOTAL-REVENUES> 204,503
<CGS> 170,757
<TOTAL-COSTS> 170,757
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 3,562
<INCOME-PRETAX> 10,653
<INCOME-TAX> 3,838
<INCOME-CONTINUING> 6,815
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 6,815
<EPS-BASIC> .30
<EPS-DILUTED> .29
</TABLE>