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Gold Prospecting
Prospecting Equipment
River / Stream Sluices - advice, information and questions
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<blockquote data-quote="Miteymuz" data-source="post: 104167" data-attributes="member: 2457"><p>Hi Peter,</p><p></p><p>I tried that aluminium mesh in your pics years ago and found it let a hell of yellow back into the river. Since then, from an engineering perspective, to me, sluicing is the endless war against constant variables.</p><p>Variables with flow, size of concentrate/classification, density, viscosity, slope, turbidity and the list goes on, "Fight fire with fire" i say. The more variations in a sluice, the better.</p><p>Look at a river, all rivers are patchy when it comes to gravity based retention. You'll get little or nothing in one spot then 10 feet away you get decent results. I build my sluices with all that in mind. Of all the sluices i have built, the best by far are the ones that have variable riffle size and spacings. Clean up sluices and highbankers are another story as you can eliminate certain variables, but in the field, with natural differing flow rates and classification limitations, as i said, "fight fire with fire". The changes in riffle size may only be subtle but over 4 or 5 feet (the length of your sluice), it makes all the difference.</p><p></p><p>Muz.</p></blockquote><p></p>
[QUOTE="Miteymuz, post: 104167, member: 2457"] Hi Peter, I tried that aluminium mesh in your pics years ago and found it let a hell of yellow back into the river. Since then, from an engineering perspective, to me, sluicing is the endless war against constant variables. Variables with flow, size of concentrate/classification, density, viscosity, slope, turbidity and the list goes on, "Fight fire with fire" i say. The more variations in a sluice, the better. Look at a river, all rivers are patchy when it comes to gravity based retention. You'll get little or nothing in one spot then 10 feet away you get decent results. I build my sluices with all that in mind. Of all the sluices i have built, the best by far are the ones that have variable riffle size and spacings. Clean up sluices and highbankers are another story as you can eliminate certain variables, but in the field, with natural differing flow rates and classification limitations, as i said, "fight fire with fire". The changes in riffle size may only be subtle but over 4 or 5 feet (the length of your sluice), it makes all the difference. Muz. [/QUOTE]
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Gold Prospecting
Prospecting Equipment
River / Stream Sluices - advice, information and questions
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