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baub
20:09:56 Wed
Dec 4 2013

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recovery rates

Been trying to determine which of the following gravity methods has the highest percentage of efficiency in very fine sized gold/silver recovery.

The contestants :

1. Oro Industries horizontal spirals

2. Generic vertical spirals. They look like huge corkscrews.

3. Bowl type concentrators like Knelsons.

Any and all opinions and facts considered with actual "Hands on" experience prefered.

b

  

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