Small Mining Operations
Ask the Experts
August 2014 by Randy Smith
Centrifugal bowls versus jigsHard Rock University: Expensive Hobby or Real Business?
Improper sampling techniques lead to more avoidable heartache than almost anything else in micro mining.
The Significance of Nuggets in Placers
Chances are better that both types of gold did not come from the same source. Let's look at the probable conditions to cause two types of gold in a placer.
California to Allow Suction Dredging in 2019?
There are a few questions you will need to ask yourself before you apply for a suction dredge permit from the State Water Resources Control Board.
The Fire Assay of Carbon
Carbon, activated charcoal, or “char,” as some old timers refer to it, can be an assayer’s nightmare.
Cyanide-Free Gold Separation
Some ores—mostly those with a high free gold content—are very amenable to gravity concentration. Well oxidized ores containing coarse gold are usually best for non-cyanide processes. Ores with significant sulfide content may require the...
Uphill Battle Continues for California Dredgers
There are currently three controlling agencies or entities over suction dredging in California—and you can make that four if the state legislature decides to further muddy the waters with additional legislation to block suction gold dredging in the state.
Hidden Value in Old Tailings
The 15 rare earth elements were discovered long after the gold rush began to wane, but demand for them only took off over the past 10 years...
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