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The lil Gold Spinner
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The Pocket Sluice

Author Topic: old time rocker  (Read 2948 times)

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Offline graeme1955

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Re: old time rocker
« Reply #10 on: February 14, 2019, 10:22:49 AM »
Just a thought to throw out there, why not equip a rocker with some of the new matting that is available out there and see how they would work?

Offline JOE S (INDY)

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  • Wiser Mining Through Endless Personal Mistakes
Re: old time rocker
« Reply #11 on: February 14, 2019, 11:39:54 AM »
Because the newer mats, like Gold Hog for example, are designed to retain material traveling 90 degrees to the drops and use a lot of water volume to flush through the lighter materials.  The water (and the drop of the box) does all the work of separation and flushing of lights with the direction of the slurry being straight down the box.

Some other mat types (like Vortex styles of conveyor belting) can't tolerate sideways sloshing of under watered slurry.  That matting requires a solid plane to function.

Rockers use very little water and  use the physical rocking motion to manually assist that minute amount of water to physically tumble the lighter materials diagonally across riffle barriers while hoping that the Gold somehow settles in a catchment within the system.  .  The classified slurry just zig zags down the box, moving mostly by being tumbled along that route and over riffles.

Rockers were used when there JUST wasn't a water flow (for example the beaches of Nome, small puddles of ground water or even muskeg) or some area where there was Gold but very little water flow.  Water doing the work was faster (OMG Yes!) and easier (Yep, that, too!).  The great advantage of a rocker is that it CAN work in very limited, totally hand dipped water.  Add a pump and you go back to a highbanker sluice box.

Two completely incompatible systems.

Wiser Mining Through Endless Personal Mistakes

Offline mcbain

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Re: old time rocker
« Reply #12 on: February 14, 2019, 07:36:51 PM »
Hi.My geolegy friend built a copy of the fraser river rocker and it does work.If you can drive to your work site.Unless you are Paul Bunyan you are not packing this thing anywhere.And yes it lost fine gold same as 150 years ago.Just saying ,Luck Mcbain.
I started out with nothing Istill have most of it.

 


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