Hey There Folks
I recently made some changes to my dredge, using gold hog matting to process the the slurry passing a 6mm screen. Gold hog matting used was 900mm long made up of ur, bedrock and motherlode profiles, and I though it was running great and particularly enjoyed the not having to pan so much tailings, That was until, i popped a keene sluice on the end to see how well it was really doing and the results were surprising, the cunky bits that just passed the got throw the screen were all found in the keene sluice with some fine, and the gold caught in the goldhog matting was mainly fine, less than 2mm in size, to ultra fine. It was a short test, with the total gold found being 3.2 grammes, of which 0.7 grammes was caught in the keene sluice.
Conclusion, you cant run exclusively gold hog mates as your heavy gold is being blown over the matting and out the back, contrary to all doc assurances and tests. I would recommend that peeps use a combinantion of riffels and the matting, with say three or four proper riffels at the head of the box to catch the heavies followed by the gold hog matting, unless of course you like losing 25% of your hard won gold.