Small Mining Operations
Underground Mining: Stoping Methods
October 2016 by Chris Ralph
In an old mine that does not have stopes, you know the old miners did not take much if any ore out of that excavation. On the other hand, if you see large stopes within the mine you know that it is these places where the miners found profitable ore deposits within the vein.
The Subsurface Suction Dredge
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...
Gold Recovery with Centrifugal Bowls
Centrifugal bowls are very efficient, and with proper operation they can consistently achieve gold recoveries above 95% with gold of about 50 mesh size.
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.
What Happened to The Gold Prospecting and Mining Summit?
We continue to seek out a patented mining property with an owner who is willing to host such an event with a water supply and enough remaining gold to make it worthwhile for the students.
Bering Sea Gold—Part II
In last month’s issue we covered the initial discovery of gold, the subsequent gold rush that occurred around Nome, some of the geology of the area and past production. We’ll conclude the article in this issue with a further examination of the geology and deposit types, discuss the resources...
Dredging Safety: Don't Ignore The Warning Signs
At first, I tried to shift things around, but then a hand with a rock would appear, so I would stop trying to adjust my gear and grab the rock to keep things moving.
The Basics of Exploration Leases and Contracts—Part II
This is the point where you might ask, “What do these types of contracts typically look like and how are they negotiated?” Well, that is the topic of this month’s article.
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The Bawl Mill
• Ask The Experts: Should I remove someone else’s claim post from my claim?
• Ask The Experts: Question about resolving a quitclaim error
• A New Prospecting Spot
• MMAC & PLP Update
• Digging It Dry
• Alternative Financing Alternatives
• Dredging Therapy
• Moving The Big Rocks
• Modesto, California Man Finds 18-Ounce Nugget
• New ICMJ Website Almost Here
• California State & National Gold Panning Championships
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
