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7. COMMODITIES HELD BY BROKER (Details 1) (USD $)
3 Months Ended
Jan. 31, 2013
Jan. 31, 2012
Commodities Held By Broker Details 1    
Gross realized gains $ 767,057 $ 182,530
Gross realized losses (1,193,058) (787,400)
Unrealized gains (losses) 453,882 1,577,294
Total $ 27,881 $ 972,424