<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> 1000
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          MAR-31-1998
<PERIOD-END>                               JUN-30-1997
<CASH>                                          22,653
<SECURITIES>                                         0
<RECEIVABLES>                                  100,096
<ALLOWANCES>                                       881
<INVENTORY>                                          0
<CURRENT-ASSETS>                               130,299
<PP&E>                                         254,192
<DEPRECIATION>                                 143,595
<TOTAL-ASSETS>                                 258,453
<CURRENT-LIABILITIES>                           91,691
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                         6,004
<OTHER-SE>                                     143,898
<TOTAL-LIABILITY-AND-EQUITY>                   258,453
<SALES>                                         95,163
<TOTAL-REVENUES>                                95,163
<CGS>                                           76,230
<TOTAL-COSTS>                                   76,230
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                  65
<INCOME-PRETAX>                                  9,859
<INCOME-TAX>                                     3,895
<INCOME-CONTINUING>                              5,964
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     5,964
<EPS-PRIMARY>                                      .25
<EPS-DILUTED>                                      .25