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Not Enough To Be " Just A Letrap "


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not trying to derail this thread, but you can highbank in california. you just can't discharge directly into a water course.  I usually set up far enough away to allow the sediment to drop out before the water makes it's way back to the river. if I'm too close to the water to do that, I use a mortar tub to allow the discharge to settle.:smile:

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Gambler.....

True you can highbank but you must be 300' away from the stream.  No motorized equipment within 300' for the purpose of recovering minerals. That includes pumps.

Very hard to do that on most streams.

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I've never been 300 feet from a stream, including right in front of forest service officer.  not disputing what you said, but until someone with a uniform tells me different I'm 'banking. 

that seems like a flippant response, however it's not meant to be:smile:.  I believe I am not breaking the law, and will continue to 'bank near the river. I respect your post though.

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Hey Lipca, nice work!  I use a punch plate on my sluice and think I may see the issue.  In the photo it looks like the water inlet into the letrap is above the punch plate...meaning no water flow below the plat except for what drops through the holes...I may not be seeing it correctly but let me know.  I let water run into the sluice below my punch plate and set my plate at a slight incline extending past the matting and over the top lip on the first riffle (Keene 51). I use thin stainless punch.  Once tried a little thicker anodized punch and it wouldnot flow correct.  I will try to post a pic soon.

Matt

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For the punch plate to function, the material(and water) has to run over the punch plate.

Yes it does.  Running under it also helps clear the v mat..  I set mine so water goes below and above. I am careful to introduce materials on the punch plate back away from the edge so it doesn't go under.  I like being able to break up clods and clay by rubbing it against the punch plate like a cheese grater without fear of dislodging stuff from the v mat.

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I guess the question would be, how did you introduce water below the punch plate without introducing any material? The only answer I can come up with is you are not running material on a slick plate prior to the punch plate?  Only using the punch plate as sort of a classifier to put material on.....

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On 9/14/2017 at 7:31 AM, LipCa said:

I guess the question would be, how did you introduce water below the punch plate without introducing any material? The only answer I can come up with is you are not running material on a slick plate prior to the punch plate?  Only using the punch plate as sort of a classifier to put material on.....

This is correct

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