<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> YEAR <FISCAL-YEAR-END> SEP-30-1995 <PERIOD-START> OCT-01-1994 <PERIOD-END> SEP-30-1995 <CASH> 19,661 <SECURITIES> 156,908 <RECEIVABLES> 59,803 <ALLOWANCES> 489 <INVENTORY> 21,313 <CURRENT-ASSETS> 114,994 <PP&E> 1,010,722 <DEPRECIATION> 586,960 <TOTAL-ASSETS> 710,165 <CURRENT-LIABILITIES> 69,611 <BONDS> 0 <COMMON> 2,677 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <OTHER-SE> 559,758 <TOTAL-LIABILITY-AND-EQUITY> 710,165 <SALES> 314,930 <TOTAL-REVENUES> 325,776 <CGS> 302,859 <TOTAL-COSTS> 302,859 <OTHER-EXPENSES> 8,801 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 407 <INCOME-PRETAX> 13,709 <INCOME-TAX> 5,044 <INCOME-CONTINUING> 9,751 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 9,751 <EPS-PRIMARY> .40 <EPS-DILUTED> .40