<ARTICLE> 5 <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> DEC-31-1998 <PERIOD-START> JAN-01-1998 <PERIOD-END> SEP-30-1998 <CASH> 150 <SECURITIES> 0 <RECEIVABLES> 26,090 <ALLOWANCES> 1,506 <INVENTORY> 0 <CURRENT-ASSETS> 31,774 <PP&E> 138,763 <DEPRECIATION> 36,548 <TOTAL-ASSETS> 135,425 <CURRENT-LIABILITIES> 32,786 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 72,146 <OTHER-SE> 1,176 <TOTAL-LIABILITY-AND-EQUITY> 120,634 <SALES> 166,517 <TOTAL-REVENUES> 166,517 <CGS> 0 <TOTAL-COSTS> 153,495 <OTHER-EXPENSES> (148) <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 881 <INCOME-PRETAX> 12,289 <INCOME-TAX> 4,835 <INCOME-CONTINUING> 7,454 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 7,454 <EPS-PRIMARY> 0.70 <EPS-DILUTED> 0.69