How To
How to Interpret Assay Values
January 2018 by Don Robinson
This assay system of ounces per ton sounds simple enough, but the use of the metric system and the additional measuring terms of “grams per ton” and “parts per million” (ppm) has created some misunderstanding of ore value.
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• Determining the amount of gold in a specimen
Geobotany: Plants Associated With Mineral Deposits
Science has shown, over the past few centuries, that there is a direct correlation between certain plants and their geophysical surroundings.
Hard Rock Milling: A Matter of Scale
Most prospectors understand placer mining a lot better than hard rock mining and don’t realize the amount of work that goes into processing different types of hard rock ore.
How to Stake Your Own Mining Claims—Part II
I’d like to offer some practical comments about staking and maintaining mining claims. Owning your own claim is the dream of many prospectors. I’ve made good money off my mining claims, both from the minerals I have found on them as well as from leasing out some of my claims to larger mining and exploration companies.
Ask the Experts
What is the best type of mat to use in a high banker set up?
How to Refine Silver—Pt I
Silver refining has been used from ancient times to change the characteristics of the metal. Early metallurgists refined silver by heating it a couple hundred degrees above its melting point and holding the metal at an elevated temperature for a period of time.
Customizing Your Dredge
I am going to suggest dozens of ways you can increase suction power, dredge to greater depths, and improve recovery methods in your sluice box.
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The Bawl Mill
• Legislative and Regulatory Update
• California: The Land of Big Nuggets—Part II
• Bedrock Nugget Hunting: Tools of the Trade
• A Primer on Bitcoin and Other Cryptocurrencies
• Gold Hunting on Libby Creek
• PLP and MMAC Update
• Man's Best Friend
• An Interview with Minelab Engineer Mark Lawrie
• Third Largest Nugget in Existence Returns to Dallas
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