<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 12-MOS <FISCAL-YEAR-END> DEC-31-1998 <PERIOD-START> JAN-01-1998 <PERIOD-END> JUN-30-1998 <CASH> 1,778 <SECURITIES> 0 <RECEIVABLES> 44,828 <ALLOWANCES> 972 <INVENTORY> 1,750 <CURRENT-ASSETS> 66,803 <PP&E> 81,901 <DEPRECIATION> 37,813 <TOTAL-ASSETS> 205,826 <CURRENT-LIABILITIES> 40,079 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 0 <OTHER-SE> 128,756 <TOTAL-LIABILITY-AND-EQUITY> 205,826 <SALES> 93,717 <TOTAL-REVENUES> 93,717 <CGS> 76,681 <TOTAL-COSTS> 86,550 <OTHER-EXPENSES> 191 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 1,049 <INCOME-PRETAX> 6,309 <INCOME-TAX> 2,900 <INCOME-CONTINUING> 3,409 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 3,409 <EPS-PRIMARY> 0.24 <EPS-DILUTED> 0.24