http://www.keeneeng.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=CS4&Category_Code=GPHSS
I use this over the bucket, then if the material is really dry then put a shovel of interesting gravel/sand in, shake it, spin it until only the larger rocks are left, then refill another hole with them. Repeat until the bucket is weighs as much as you want to carry, then make another 1 or 3. If the gravel is moist or wet, I fill the bucket with water to allow better seperation of the material.
I then run this "classified" material that is smaller than 1/4" thru the sluice 1 scoop or approx 1 cup at a time so you don't overload the sluice and loose gold.
This is an especially good summer to go fo gold. After the heavy rains and snow, alot of new gold got moved and redeposited.
And, as far as the environment goes, if there is contaminate mercury in the material you are processing, it comes out with the gold. Thereby improving the habitat. All you take out is some gold, some heavy sand, old nails, bullets, lead sinkers and occasional garnets.
OK, enough tutoring on my part......
Anyone got some extra buckets?
Thx,
-Scott