What To Do When Gold Recovery and Assay Values Differ

May 2018 by Don Robinson

Before going into an analysis of the ore composition, two other major factors will affect the result. These are the accuracy of the assay and the effectiveness of the mill for the gold recovery.

Gold Recovery with Centrifugal Bowls

July 2014
Centrifugal bowls are very efficient, and with proper operation they can consistently achieve gold recoveries above 95% with gold of about 50 mesh size.

Piggin' for Gold

May 2015
Take a look at the picture—it’s pretty simple and you can build it yourself.

Crushing Quartz in Calaveras County: A Placer Miner Learns New Tricks

June 2014
I had never run an impact mill before, but anything involving rocks, water and a big electric motor sounded great.

Using Google Earth and Other Maps

November 2012
Last month, one of our readers requested an article regarding the possible use of Google Earth for prospecting research. It was a good idea, so here it is.

How to Melt Your Own Gold

March 2012
There are good and bad ways to melt gold. In this article, we’ll take a look at the right way to melt gold without losing any of the valuable metal.

Alternative Gold Leaching Methods

January 2014
The ideal leaching chemical would leave behind what we don't want or need in the ore and take only the valuable metals.

Small-Scale Hard Rock Mining With Water Recycling

March 2015
Once I have established the presence of gold in the sample, I collect five-gallon bucket quantities of the rock material for processing back at my shop.

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