Proper Placer Sample Processing
November 2013 by Jim Halloran...your sampling procedures should not be designed to catch gold your mining technique will never recover.
Adam’s condition had been deteriorating every step of the way. At times, I could only coax him ten or twenty feet before he laid down again. He refused to eat or drink. At this point, I realized we might not get out of the canyon by dark and might need help getting Adam out at all.
The type of mine dump that is best for metal detecting are the ones that consist of mixed sizes of rock and are located near some sort of excavation, commonly a shaft or adit. Sometimes the piles located along a trench dug by the miners can be productive as well.
Much more information can be gained from that single source and gives you ideas on the gravels for dry washing or where the nuggets may lie for metal detecting
I have smaller pans for cleaning black sand concentrates, big pans for taking large samples, pans with corners for pouring out materials, and pans with lots of special riffles. This variation is why I have so many pans—they each have their specialty.
If you do the math, it equates to about $1,500 of heavy metal value per three-hour dive. This is good wages, and you are doing a service to the environment by removing this toxic metal.
We panned out maybe three gold pans of the material and we were shocked at the gold that was there. This rock appeared to be rich.
The Bawl Mill • Ask the Experts • One Potato, Two Potato... • Strategic Metals—Part I • Dry Washing to Capture Fine Gold • Are There Any Good Prospects Left? • Ophir—Possibly the Best Kept Secret in Alaska! • Southern Oregon's Illinois River—A Lesson in Sharing • Using Sucker Guns to Find Gold • Making Adjustments to Catch Fine Gold • The Subsurface Suction Dredge • A Few Thoughts About Successful Nugget Hunting • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices