The importance of varying zones. Pics

[goldhog]

Over the years we have really come to understand the importance of "varying exchange and capture zones" in gold mining.
Watching 1000's of controlled runs, doing flow model testing, Plexiglas sluices, commercial op work, flow studying, etc.
FAILURE........ is often the best teacher...

Basically......in simple terms....some things just like to hide in different places.
Some has to do with settling velocity and hydraulic equivalence, but a great deal of this is greatly impacted by the particles hydrodynamic profile (shape) and size.
Understanding that making SPACE and zones for "different types, size and shapes of gold" is important.
You can also PREVENT large objects from settling in certain areas as well by limiting the "space" and "hiding area" which is important
in areas with lots of "heavies".

The pics below are after run cons through the Multi Sluice.
Thought it was cool to see the varying areas and the concentration of lead shot on that one line.
Not a real "scientific" post.... more so a fun observation.
Doc







Out of that same one mat space.

 

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[mike(swWash)]

That 1st picture is worth 1000 words as it kind of explains it all.....I'd love to get even one of those grooves worth of gold this year

 

[Jeff95531]

Hey Doc. Just curious. How much dirt was run to recover that and how much gold was recovered? (don't really care if it was a "controlled" sample, just curious.) My LeTrap excels at recovery but does load up a bit quicker than I'd like. If I had a decent place to work, a BGT and your sluice would be all I ever wanted. Well...and dredge of course.

 

[Jeff95531]

Of course...it all depends on flow, volume and WHAT you're sluice is plugging up with.

 

[mike(swWash)]

I wish I had that problem Jeff

 

[Jeff95531]

me too buddy. For now, I just wish I could find a spot and settle in.

 

[goldhog]

Hey Doc. Just curious. How much dirt was run to recover that and how much gold was recovered? (don't really care if it was a "controlled" sample, just curious.) My LeTrap excels at recovery but does load up a bit quicker than I'd like. If I had a decent place to work, a BGT and your sluice would be all I ever wanted. Well...and dredge of course.

That was from the Multi Sluice running dredge cons.
It was a gallon of cons run through in about 5 minutes and takes that down to about 1/2 - 1 cup.
That is step #1
Then we go to step #2 which is the washer mat, a stripping step, designed to remove black sands.
Takes the 1 cup down to about 1-2 tablespoons.
2 minutes.



So it's not really a good measure of "an actual run"

 

[ncclaymaker]

I would really have liked to place my Goldwell sluice on the tailings end of his super duper gizmo hyper-reburbulated cross bios backflow filter sluice. But I wonder how many times did they run the same dirt through?

 

[goldhog]

Sometimes when people make no sense it's best not to say anything.