Small Mining Operations
Advancements in Non-Toxic Gold and Silver Leaching
January 2019 by Chris Ralph
The non-toxic thiosulfate is actually the medical antidote given to people for cyanide poisoning. By accomplishing both neutralization and metals recovery, this process creates an economic and environmentally attractive process.
Ask the Experts
Centrifugal bowls versus jigs
Nice Specimen Gold Recovered in Northern California
Each specimen is carefully examined to determine if it would be beneficial or not to use an acid treatment to reveal more of the gold.
The Challenge of Winter Dredging
Dredges actually do pretty well in freezing conditions. There are a few tips you should know, however.
The Miner’s Switchback
Common thought is the switchback slows the velocity of the rushing water and gold drops out from the cut bank to a fill gravel bar within or below the switchback. I am not going to disregard that model; however, I hope to improve upon it.
A Few Methods for Sampling Hardrock Deposits
With a little homework and a methodical approach to sampling, a prospector can determine if a deposit is worthy of more of an investment...
Who is a Qualified Person?
So you think you have an ore deposit? The work has been long and hard, but there are a few drill holes, lots of samples and assays. The data is in a reliable computer and there may be a mine at the end of the tunnel. What is the likelihood of a profitable operation? Can you raise capital for development or exploration?
The Smell of Gold—Part I
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.
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The Bawl Mill
• Ask The Experts - Need advice on melting gold
• Ask The Experts - Can gold be found with sugary, crystalline quartz?
• Making A Big Discovery
• More On Gold Indicators—What to Look For
• The Underground Mining Adventure Continues
• Alaska Gold: Lisianski Inlet's First Bonanza
• Route Planning Using GPS
• The Mineral Range Districts of Utah
• Gold Prospecting for Better or Worse: Stupid Is As Stupid Does
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
