Prospecting & Detecting
Continuing Hard Rock Exploration
April 2014 by Don Robinson

Using A Blasting Machine in Rock Breaking
Whatever system you plan to use will require a way to safely initiate the explosives from a distance. In this article, we’re going to learn the basics of electric blasting and get a hands-on example…
Confluence Placers

Crushing Quartz in Calaveras County: A Placer Miner Learns New Tricks
I had never run an impact mill before, but anything involving rocks, water and a big electric motor sounded great.
Volume is the Key to Success
While recovery rates are important, they must necessarily be secondary to the volume of material processed. Running more material at lower recovery rates is generally preferable to increasing the efficiency of the system.
Revisiting the Rocker Box

The Hill of Gold
I was amazed and surprised, and I took a moment to admire how beautiful this coarse chunk of gold was. It later weighed exactly one-half ounce.
Detecting for Gold: A Return to Familiar Ground
I probably swung over a few targets without noticing them. My first target came about ten minutes later as I went over a part of the high bench in this wide section of the dry wash.
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