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.
Panning on North Fork American Yields Good Gold
This second trip down was a challenge. It started in Colfax on the Stevens Trail, where the distance to the river is four miles with an elevation drop of about 1,000 feet.
A Golden Past
My mining partner Keith McBride and I spent a week in May working on a twenty-nine man crew split up into six teams at a couple of “pay to mine” mining camps.
Hard Rock 101: Micro Blasting
Micro blasting can be used to take down hanging rock, separate minerals from overburden, and collect gemstones and other high-value product with minimal damage.
Detecting Alluvial Bench Deposits -- Pt II
![](http://www.icmj.com/userfiles/images/201703/toc-25-detecting-alluvial-benches.jpg)
Tyrie's Roadway Nugget
![](http://icmj.com/userfiles/images/201111/toc-tyrie-nugget.jpg)
Revisiting an Old Mine in Idaho Reaps Rewards
![](http://www.icmj.com/userfiles/images/201204/TOC-revisiting-an-old-mine.jpg)
Third Largest Nugget in Existence Returns to Dallas
While the bullion value of the nugget is already substantial, the size and rarity of the Ausrox Nugget combine to make its worth invaluable in the collector market.
Subscription Required:
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
Free: