<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 3-MOS <FISCAL-YEAR-END> DEC-31-1999 <PERIOD-START> JAN-01-1999 <PERIOD-END> SEP-30-1999 <CASH> 10,750 <SECURITIES> 4,718 <RECEIVABLES> 33,470 <ALLOWANCES> 5,150 <INVENTORY> 19,999 <CURRENT-ASSETS> 76,253 <PP&E> 226,959 <DEPRECIATION> 157,706 <TOTAL-ASSETS> 186,827 <CURRENT-LIABILITIES> 36,806 <BONDS> 1,535 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 2,857 <OTHER-SE> 140,146 <TOTAL-LIABILITY-AND-EQUITY> 186,827 <SALES> 0 <TOTAL-REVENUES> 53,105 <CGS> 21,924 <TOTAL-COSTS> 47,244 <OTHER-EXPENSES> 4,153 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 2,256 <INCOME-TAX> 856 <INCOME-CONTINUING> 1,400 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 1,400 <EPS-BASIC> 0.05 <EPS-DILUTED> 0.05