Prospecting & Detecting
All About Trommels and Screens for Placer Gold Recovery
May 2022 by Chris Ralph
The right speed accumulates only the heavy materials and allows all of the lighter stuff to flow through. This optimum speed is dependent on the size of the gravel you need to move through the system.
Downieville: Another Gold Rush Favorite
I didn’t know what to expect because the area we were working was not close to the water, but we were pleasantly surprised when we began to pan out some nice flakes and a few pickers.
Twenty Minutes on a Five-inch Dredge
The first thing I realized was this was not a toy—this thing had power and I needed to really pay attention. I got into position, took a deep breath, and pushed that monster into the hard pack.
Paperwork Guy—A Cautionary Tale
I recently grew complacent, and it caused me to make a mistake that resulted in the loss of a mining claim. It brought my mining plans for the summer to a complete halt.
Metal Detector Testing Methods
It will not be any easier than on your table at home, and so testing a very small test target like the ballpoint pen can tell you immediately if a detector is suitable for looking for tiny gold nuggets.How Deep Can That Detector Go?
Knowing how to get the greatest depth performance out of your detector can be a handy thing, but it’s not an easy, simple matter.
Refractory Gold Processing
After your excitement peaks when you first receive the high gold assay from the vein you just exposed, you ponder how you will extract and sell your gold. You will need to develop a flow sheet for your process to optimize your recovery and minimize your costs and permit requirements.
Ask The Experts
• Making a noisy dredge more quiet
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The Bawl Mill
• Legislative and Regulatory Update
• Ask The Experts - How are gold veins formed?
• Ask The Experts - Is there gold in Monterey County, California?
• Ask The Experts - Can you explain NMR and satellite imagery?
• Ask The Experts - What other indicators are there besides red soils?
• Mineralization, Ground Balance and Metal Detecting
• Gold Prospecting for Better or Worse: Warning Signs
• What To Do With All That Gold?
• Proposed 100-Mile Road in the Yentna Mining District
• Judge Orders FBI to Produce Records on Civil War Gold Hunt
• Strategies for Detecting Heavily Pounded Areas—Pt II
• Auburn, California
• Old Water Channels Provide Important Clues
• The Mystery of the Grand Summit Mine
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
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