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 Post Posted: Mon Nov 24, 2014 1:50 pm 
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Today ran about 90-100 GPH per inch over 10" sluice.
(1100 gph pump with a long hose.)
(Did not have a control value to reduce the flow.)
Grabbed about a quart of super cons that were really BLACK MUCK... MUD MUCK.
Really didn't screen, wanted to see what happened. Had particles up to 1/4" but mainly 1/8" and below.
Ran about 8-9 degrees.
It reduced the quart to roughly 3 tablespoons and pulled about 90 - 95% of the gold by weight.
This included a bunch of 50 - 100 mesh gold.
Took me about 10 - 15 minutes.
Fed slow and allowed the "grooves" time to process down black sand.
Ran water fast enough that after a few seconds the first few groove were nothing but gold.
My "gut" tells me that 50 gpi would be better.
This will create a THIN sheet of water that better follows the contour of the mat.


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 Post Posted: Mon Nov 24, 2014 2:29 pm 
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What if we put a valve inline to control the water velocity/volume?


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 Post Posted: Mon Nov 24, 2014 2:49 pm 
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mdvga wrote:
What if we put a valve inline to control the water velocity/volume?


Yes, that is what is needed.
Just didn't have one on hand.
Lowes trip in the morning.... as usual.


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 Post Posted: Mon Nov 24, 2014 3:37 pm 
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What diameter is your hose?


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 Post Posted: Mon Nov 24, 2014 5:20 pm 
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mdvga wrote:
What diameter is your hose?


1-1/8" hose which makes it tough to find, but we'll just make it work with adapters.


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 Post Posted: Mon Nov 24, 2014 5:42 pm 
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Also a SUB-NOTE....
I "believe" (hypothesis) 20 - 50 GPI will show the best results.
A thin sheet of water must FOLLOW the profile of the mat.
Get it too deep and the larger "wells" become inactive and fill up with black sands.


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 Post Posted: Tue Nov 25, 2014 3:51 am 
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Will using a surfactant make any difference? To what effect? mdv


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 Post Posted: Tue Nov 25, 2014 7:23 am 
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A little is not a bad idea. We spray our mats with watered down jet dry right before we start the water. Then brush any air bubbles away with hands of clean dish brush. Mainly with new mats you may have surface bubbles in the grooves, but just rubbing them with your hand gets rid of them as well.
The only real impact it would have is if you ran dry cons and you would have to have a good amount of JetDry in the water system to really impact the surface tension.


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 Post Posted: Tue Nov 25, 2014 8:12 am 
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Yeah, the water table I told you about, I made the mistake pf dropping micro fine gold on it and watched it instantly flow right off the end. Has to be wet.


Last edited by mdvga on Wed Dec 17, 2014 8:51 am, edited 1 time in total.

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 Post Posted: Tue Nov 25, 2014 12:14 pm 
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Well here was my first trial run of Docs new Washer Mat WOW this stuff really works :D Sorry about the lead problem :o I am going to have a 4 day weekend so Hopefully I will have a lot more to show everyone and I will try some more different angles 8-)

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