Placer Channel Sampling
July 2013 by Jim HalloranSampling gold placers can be rewarding, but remember to treat the samples so you are not high grading or low grading your results. Learn the rules and apply them so your samples are accurate.
Their rewards were far better than they had anticipated, resulting in one of the best clean-ups they had ever seen.
Pumps can be set up quite a distance away horizontally from the sluice, even hundreds of feet. It will work so long as there is sufficient water at the source where the pump is located. Vertical distance is more of a problem than horizontal distance; 30 to 40 feet is the maximum vertical climb for most pumps.
The next morning, I retrieved the compressor and again attacked the sticky head bolt. As if by magic (and some applied physics) the head bolt sighed and finally broke loose.
The zone of influence of each sample must be carefully considered when deciding how far sample sites should be spaced from each other.
At first, I tried to shift things around, but then a hand with a rock would appear, so I would stop trying to adjust my gear and grab the rock to keep things moving.
There were nice sections of vein material at the end of several drifts, like they just stopped work one day and walked away.
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