Small Mining Operations
Hard Rock 101: Small-Scale Blasting
August 2020 by John Norman
…the process remains much the same: Drill holes, load explosives, close up the holes, blast and muck out the resulting broken rock.
Gold in Tertiary Gravels
In some places, semi-continuous sections of riverbed can easily be linked in many places to identify the path of the ancient rivers.
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• Making a noisy dredge more quiet
Ancestral Yuba River Placer Gold Deposits
The small-scale miner has reasonable opportunity to exploit some of these small, rich placer gold deposits.
Shaker Tables for Processing Hard Rock Ores
Most placer equipment is really made with gold in the 30 and larger mesh sizes in mind, though if carefully used can often get reasonable recovery down to the 50 mesh size.
High Sulfidation Epithermal Deposits
They tend to be big, coming in large to extremely large sizes. They can also be amazingly rich and produce huge amounts of very high-grade ore.
Hard Rock 101: Advanced Micro Blasting
They… create negligible fumes and much less fly rock than blasting. Below are some tips on maximizing your effectiveness with these tools.
21st Century American Gold Rush: Rare Earth Elements
The burning question I needed answered was why didn’t the deposit ever get mined of at least one of the valuable minerals? A couple of reasons have come to light.
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The Bawl Mill
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