![]() Did you try Vortex mat by itself? Migration as long as it's monitored can be minimized. Migration happens, The guy said there was 7 specks in the waste pan and you could see where there was more gold in the tail of the sluice. I think you will be impressed with this mat's ability. I simply do not see migration losses more than a fraction of 1%. This gives me the ability to capture the material separately for panning it out to look for losses whether they are direct capture losses or migration losses. Whenever I do any major testing, I will run 2-3 gallons of material through to build up material in the riffles, then 2-3 gallons of salted material, then another 2-3 gallons of unsalted material. Next time your at Lowes pick up a piece to try, comes as a 17X28 door mat. 1/4 deep and 1/4 wide, the natural effect is that migration into the fingers occurs and helps protect it from scouring. Since the fingers create the drop riffle walls which are approx. Tried a lot of different things before trying this mat. I first started with miners moss and drop riffles cut from a piece of pvc pipe but it was difficult to lock down the riffles tight to the miners moss without a lot of force which could lead to breakage. Hi Reed, I had thought about gold hog mat, but due to it's solid riffle wall design it will not accept the curve required to be installed without deforming the riffles. ![]()
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