How To
Ask the Experts
May 2014 by Chris Ralph
How do mines and refiners deal with doré bars?Ask The Experts: Equipment to break up heavy clay
Q: I am looking for a “trommel machine” that doesn’t separate anything but clay slurry from rock hard clay.
Operation And Application Of Magnetometers
The technology used in these devices has advanced greatly in the last century. Many different types of physical effects are used to measure these magnetic fields and we will briefly look at some of these.
Dry Washer, Wet System or Metal Detector?
I love to dry wash old nugget patches found by detector operators, and I have found my fair share of gold dry washing those areas. I have also found a few nuggets using a detector on the bedrock exposed by dry washing the patches.
Using Geologic Maps
In order to see what geologic maps can do, we need to think about what we are looking for.
Successful Gold Prospecting
There are loads of new gold prospectors attracted by the current high prices, and so I thought it might be a great time to take a look at what makes some prospectors so much more successful than others.
The PIGMI—a DIY Crevice Tool
I’ve had great success using it to gather gold from crevices. I’d like to share the design with all of you gold miners reading this article and hope that you get as much satisfaction building and using it as I did.
Using Google Earth and Other Maps
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.
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