I've gotta comment on this filter thing.
Having owned more than a few claims up that way and still own 3 and messed with prospecting for a long time. (Back in the George ( Buzzard) Massey days, LOL.
The thing with the water/sludge they are sucking through the pump is.
Permafrost and the run off that it creates has TONS of OLD OLD plant material in it.
Once thawed it goes to the consistency of shredded wheat.
NOW unless they are pulling water direct from the creek and that water is clear, which it never is, there's no need for a filter.
But with all those claims up stream, the prehistoric plant material stays suspended in the water no matter how far down stream you go.
The idea of suspending the pump pickup works great in theory, but for the sludge to settle, it would take more than 30 days before you could even think about using the water.
The principle behind that style of filtration is to basically extrude the plant material through the screen to a size that will fit through the nozzles on the over grown sluice/shaker box.
If the water pressure is sufficient enough, it will push water/waste material through the screen as well as filter at the same time. But you have to really regulate the flow to get the perfect volume of gunk and water to make it work perfect.
You notice there were 4 lines going is the end, with one end bolted on, just in case.
What happens is, you shut 2 valves off and back flush, just in case you have an inordinate amount of material buildup, BTDT. LOL
And yes I still have all my sluice boxes, dredging pumps and gold pans!
Believe it or not, there really is a lot of placer gold in Mn., It's just a PITA to get to.
That's my 3 cents on the deal.
Oh yea, they are still dumba$$'s IMHO!
