How To
Regarding "Good Assays and Bad"
February 2012 by Chris Ralph
Last month I wrote an article entitled “Good Assays and Bad,” which gathered a few comments.Alternative Gold Leaching Methods
The ideal leaching chemical would leave behind what we don't want or need in the ore and take only the valuable metals.
Finding Gold with a VLF Detector—Part I
The very first thing to find out...is if the detector has the ability to be ground balanced.
Hard Rock 101: Small-Scale Blasting
…the process remains much the same: Drill holes, load explosives, close up the holes, blast and muck out the resulting broken rock.
Wilfley Tables—Repair, Rebuild & Set Up
I researched the Internet and found a number of table makers, but technology has changed in the last 25 years. No one could sell me a kit for a new deck with wooden riffles...
What Have You Got to Lose?
It’s accepted knowledge that wet methods will recover more fine gold than dry methods and processing the gravel as a whole will get more gold than only using a metal detector. The question is how much more?
Breaking Boulders With Explosives
The process we will be using is called “blockholing,” and it is commonly used at mines and in construction projects to break up oversize material into sizes that can be easily handled.
Crumb Hunting With A VLF Detector
Chris got a nice target signal on the edge of rising bedrock, but still in a low, but washed area. After breaking up the bedrock, he recovered several pieces of gold amounting to almost three pennyweight.
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The Bawl Mill
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• The Basics of Geophysical Exploration
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• Mining Stock Quotes and Mineral & Metal Prices
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