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 Post Posted: Sat Jan 31, 2015 10:44 am 
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Location: Juneau Alaska
Nice job Mdv :P your washer mat is getting a little bit cleaner than mine is but I'm running a smaller pump with less angle I just have to wait a little while for it to clear out , this mat is for sure the way to further concentrate down the dirt before panning :mrgreen:

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 Post Posted: Sun Feb 01, 2015 6:00 am 
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Ray, It's an expensive solution, but the 2" GPI flow meter is worth it to me. That plus the 2" PVC gate valve give me a very precise control of the water flow and there is no subjectivity in terms of how the flow "looks." I find I can generally tell when the flow "looks" right, but I have no clue as to the flow is in terms of GPIH without the flow meter.
What I am not satisfied with yet is my water outlet into my Mini-Excavator. I am not a metal fabricator so I can't make a proper box for the top end of the sluice. I put the crash box back on the Mini-Excavator because I am trying to emulate a "stock" configuration, but it is in the way...developing. mdv


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Last edited by mdvga on Wed Feb 18, 2015 7:45 pm, edited 1 time in total.
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 Post Posted: Fri Feb 06, 2015 11:23 am 
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Joined: Mon Feb 11, 2013 8:16 am
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Location: Montana
some playing with the washer mat and gold cube


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 Post Posted: Sat Feb 07, 2015 11:38 am 
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that vacum was a heck of a idea :)

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 Post Posted: Wed Feb 18, 2015 7:52 pm 
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Classification...how small do you guys go before running on the Washer mat?


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 Post Posted: Wed Feb 18, 2015 8:05 pm 
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1/4" ............... ran today 100 gph / inch 12 degree pitch.
1/4" as well as larger rocks rolling down.
It's kind of the reason for the mat (for me at least) get rid of classification as much as possible.
But....... others do more.
Also ran beach sands from wash state.


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 Post Posted: Thu Feb 19, 2015 8:30 am 
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I've been really liking the 7 degree pitch and 1/8 inch classification for the beach sand material we run at this point .......even running the monster last weekend we only had about 2 1/2 gallons of cons and first run of the washer mat was well over 97 % the second run was pretty much a waste of time

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 Post Posted: Sat Feb 21, 2015 8:31 am 
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A point I wanted to stress after a bunch of testing runs this week.......... We'll also be doing more next week. The washer mat really isn't a "sluice mat". It's not a "total capture" matting.
It's a CLEANING / stripping matting designed to help in final cleaning of gold from cons and super cons. If you run it too slow... you have incremental processing kick in and gold will ride down you sluice due to areas being full. So, its VERY important to run the mat TOO HOT when you first start.

Like I say with all out mats... run them TOO HOT... WAY TOO HOT to start with and them tone them down little by little until you have them tuned to your liking.

My goal with this matting was to get rid of the MADNESS......... of constant / multiple steps of classification. (As much as possible.) At the same time pull out the MAJORITY of the gold within minutes. Not hours and hours watching a slow system.

Most people should start with 1/4" classification.... 11 - 12 degree pitch.... and 100 gallons per inch gph. Then take other steps from there based on your own material and gold.

MAKE SURE you find YOUR OWN sweet spots.

Here's a pic from today.
Did go to 1/8" because it was dumping into a gold cube.
100 GPH / inch and 11.5 degrees.

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 Post Posted: Sat Feb 21, 2015 11:07 pm 
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Today's run..........



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 Post Posted: Sun Feb 22, 2015 12:28 am 
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Great video Doc ! I might jack my washer mats up a bit and clean up the rest of the stuff I have stored in the barn ....then only store what the gold cube catches for a cold winters day or testing other stuff :D

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