... I found it very interesting that the Gold Well was backed up by a Keene sluice of which caught the fine gold. ...
Watch the video. In the end Reed says 'And the Gold Well missed a half dozen to a dozen mico-specks of gold ...' They also show you the pan and the gold that was caught by the Keene. I couldn't even see a speck of gold in it. Also in the video I believe he says that the Gold Well was getting way more material than they could even put through the Keene backing it up.
Also in that video they said they were going to push Gold Well to it's limits to see what it would do. Ran way more water than it needs (up to the top of the rail with water when all it needs is 1/2" or so), classified only to 1 1/2" minus and in some cases dumped one and sometimes TWO FULL SHOVELS of material (into a 6" sluice mind you), not teaspoons at a time, and yet only lost 'half a dozen to a dozen micro-specks' of gold.