<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 3-MOS 6-MOS <FISCAL-YEAR-END> DEC-31-1998 DEC-31-1998 <PERIOD-START> APR-01-1998 JAN-01-1998 <PERIOD-END> JUN-30-1998 JUN-30-1998 <CASH> 8,346 0 <SECURITIES> 7,047 0 <RECEIVABLES> 8,926 0 <ALLOWANCES> 0 0 <INVENTORY> 7,721 0 <CURRENT-ASSETS> 35,574 0 <PP&E> 260,626 0 <DEPRECIATION> 59,034 0 <TOTAL-ASSETS> 239,695 0 <CURRENT-LIABILITIES> 13,385 0 <BONDS> 60,491 0 <PREFERRED-MANDATORY> 0 0 <PREFERRED> 0 0 <COMMON> 206 0 <OTHER-SE> 147,894 0 <TOTAL-LIABILITY-AND-EQUITY> 239,695 0 <SALES> 26,523 48,036 <TOTAL-REVENUES> 26,523 48,036 <CGS> 16,953 32,557 <TOTAL-COSTS> 20,926 40,067 <OTHER-EXPENSES> 0 0 <LOSS-PROVISION> 0 0 <INTEREST-EXPENSE> 877 1,905 <INCOME-PRETAX> 4,977 6,577 <INCOME-TAX> (1,916) (2,532) <INCOME-CONTINUING> 3,061 4,045 <DISCONTINUED> 0 0 <EXTRAORDINARY> 0 0 <CHANGES> 0 0 <NET-INCOME> 3,061 4,045 <EPS-PRIMARY> 0.15 0.20 <EPS-DILUTED> 0.15 0.20