So you'll be moving a ton of rock with your hands, and it'll take you longer then just sticking a shovel down there and tossing it in a sluice. Any river I've dredged had at least 50% of the cobbles larger than 2". ![]() The other thing you have to consider is that in a lot of rivers, depending where you are at, the average cobble size is is bigger than your nozzle at 1.5". That's basically 1 shovel full that he moved of the easiest possible material. ![]() And that's tiny, unpacked gravel and blow sand. *Actually look again at the video and you can see his gold pan for size reference towards the end and you can see he's only moved about 1 pan worth of material. I'm not sure the video really shows how small the gravel is and how little he is moving. ![]() From what I see I could outdig that 1.5" with a garden trowel, and I'm not saying that to exaggerate.
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