Small Mining Operations
Principles of Designing Your Mill Production System, Part I: Starting Up
January 2021 by Keith Bowen
One of the issues that prospectors run into when working to upscale from micro-scale hard rock testing to a greater production output, is that they often confuse individual devices or machines with systems.
How Rich Must My Ore Be?
How rich does a hard rock ore have to be for it to be worthwhile to process and extract the gold?
Persistence Leads to Over a Pound of Gold
I have figured out over the years that the winning combination is hard work, persistence, knowledge, and a little luck. This leads me to describe one of my best finds ever, a “honey hole” of placer gold, if you will.
Proper Spacing of Placer Sample Sites
The zone of influence of each sample must be carefully considered when deciding how far sample sites should be spaced from each other.
Sixteen to One Gold Mine: Unique Challenges and Potential Rewards - Pt I
Many of the Sixteen to One’s challenges arise from its unusual geology and the pocket characteristics of the ore deposits.
The Bucking Room
Since this position was the least desirable due to the hard physical labor, the bucking room was used as punishment. Do you have a mediocre worker? Bad attitude? Off to the bucking room!
The Smell of Gold -- Part II
While mapping, I also found rock chips in the soil that were characteristic of the same wall rock alteration that occurs adjacent to the known lodes in the greenstone belt.
The Summer of ‘81
When it was all setup and running, you had everything coming off the dredge riffles into the boil box. At the hole section, some of the water got sucked down and pulled a lot of black sand and over heavies…
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