Small Mining Operations
Conductive Minerals and Your Metal Detector
August 2014 by Chris Ralph
...most prospectors don't even think about the conductivity of minerals, but there are some that do conduct electricity to a certain degree, so metal detectors will respond to them.
Additional articles that might interest you...
The Smell of Gold—Part I
June 2015
Some claim they can smell gold. This may be, but when I take a whiff of gold, I smell dirt, rotten eggs, garlic or just nothing: my nose is everything but sensitive.
Some claim they can smell gold. This may be, but when I take a whiff of gold, I smell dirt, rotten eggs, garlic or just nothing: my nose is everything but sensitive.
The Subsurface Suction Dredge
November 2013
The problems of the submersible dredge tube are addressed by the subsurface dredge, where the enclosed sluice recovery tube is suspended from a flotation assembly...
The problems of the submersible dredge tube are addressed by the subsurface dredge, where the enclosed sluice recovery tube is suspended from a flotation assembly...
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.
I had never run an impact mill before, but anything involving rocks, water and a big electric motor sounded great.
Ask The Experts
June 2016
Q: How do I improve my small-scale mining operation’s gold production?
Q: How do I improve my small-scale mining operation’s gold production?
Excavator Testing Wet Placer Ground
April 2013
The excavator or backhoe has become the tool of choice for testing placer ground. These machines are the best way to explore and sample a placer deposit if the ground is not too wet or frozen and bedrock is not beyond the reach of the machine.
The excavator or backhoe has become the tool of choice for testing placer ground. These machines are the best way to explore and sample a placer deposit if the ground is not too wet or frozen and bedrock is not beyond the reach of the machine.
Ophir—Possibly the Best Kept Secret in Alaska!
November 2013
...I decided to excavate the semi-frozen high-bank that was resting on a soft shale bedrock footing. Within three feet, I encountered an intrusive!
...I decided to excavate the semi-frozen high-bank that was resting on a soft shale bedrock footing. Within three feet, I encountered an intrusive!
Designing and Evaluating Placer Gold Recovery Plants
September 2014
For this article, I am focusing on industrial production plants that can handle 10 cubic yards per hour or more and would be fed by a loader or other heavy equipment...
For this article, I am focusing on industrial production plants that can handle 10 cubic yards per hour or more and would be fed by a loader or other heavy equipment...
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Bawl Mill
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• A Model Mining Operation
• BLM Raises Location and Claim Fees
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• Drilling for Ore
• Sniping for Drought Gold
• Successful Rally for Suction Dredge Miners in Idaho
• Over the Divide
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