There is a light weight, heavy wire classifier built just for the High Volume Fine Gold Sluice Box. We need to accurately separate fine aggregate materials (sand and gravel) with considerable speed. Buckets with screens, sieves and other slower, jam prone separators won't work.
 
In this case, simpler is better.
 
The fan design of this classifier makes fine gold recovery easy.
 
In essence, we reject or shun everything except the fine gold bearing materials.
 
After that our sluice box will separate the gold from the waste materials.