How To
Ask the Experts
January 2015 by Chris Ralph
• How do I clean up gold encrusted with iron-sulfides?Excavator Testing Wet Placer Ground
The excavator or backhoe has become the tool of choice for testing placer ground. These machines are the best way to explore and sample a placer deposit if the ground is not too wet or frozen and bedrock is not beyond the reach of the machine.
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.
Ask the Experts
Ore testing and other advice for starting up a mining operation.
Ask The Experts: Equipment to break up heavy clay
Q: I am looking for a “trommel machine” that doesn’t separate anything but clay slurry from rock hard clay.
Ask The Experts
• Two questions: Is fool's gold magnetic? And how do you go about filing a miing claim?
Proper Assaying of Placer Samples
The whole purpose of sampling mineralized ground is to measure the values in a small volume of material that would be representative of a much larger volume of similar material. The key word is representative. Chemical and fire assaying will not accurately represent placer deposits by themselves.
Fine Gold Panning Without Using Mercury
The technique I will describe is a much safer alternative and it works. It’s a fine-gold panning technique that eliminates the need for mercury amalgamation of most placer samples.
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The Bawl Mill
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• Return to Chicken, Alaska
• The Pothole Patch
• All About Pyrite
• Diamond Prospecting in Indiana
• Significant Progress for California Suction Gold Dredgers
• Why Did This Silver Mine Close? -Conclusion
• The Ely Copper-Gold District of Nevada
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
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Legislative and Regulatory Update
• How to Field Evaluate A Placer Property
