Prospecting & Detecting
Study Confirms Mercury Levels Safe in California's Gold Country
July 2013 by Scott Harn
While the Water Board documented the selenium levels in fish and noted they exceed the levels of mercury, they have yet to acknowledge the numerous scientific studies that show selenium effectively neutralizes the effects of mercury.Hunting for Hardrock: The Basics
Exposed veins and outcroppings can be a great source for gathering good gold ore for processing. Veins and outcroppings do require a lot of work to free the ore from its earthen grip, but this labor can be very rewarding.
The Essentials of Dry Washing
Most dry washers have a feed rate adjustment. It needs to be set so that the material flows evenly over the riffles and does not bury them.
Proper Spacing of Placer Sample Sites
The zone of influence of each sample must be carefully considered when deciding how far sample sites should be spaced from each other.
Proven Strategies for Detecting Gold
I’m sure we all have, at some point in time, gone out detecting and ended up not having the success we thought we would have. Here are some helpful game-changers that work for me and may work for you, as well.
Fells Flat Gold
My wife Fran and I were brushing and repairing the road to our claim when we were interrupted by a fellow in a pretty yellow Jeep heading out to the local town of Quincy, California.
The Smell of Gold—Part I
Some claim they can smell gold. This may be, but when I take a whiff of gold, I smell dirt, rotten eggs, garlic or just nothing: my nose is everything but sensitive.
Q&A With Detector Designer Dave Johnson
...it’s been a little known secret that one man was involved in designing many of the most respected very low frequency (VLF) nugget detectors on the market. Dave Johnson has designed gold-oriented detectors for Tesoro, Whites, Fisher and others for more than 25 years.
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The Bawl Mill
• Ask the Experts
• Ask the Experts
• The Birimian Greenstone Belts of West Africa
• All About Quartz—Part II
• The Pearce Mineralized Area, Dragoon Mountains, Arizona
• An Alaskan in the Lower 48
• Romancing the Rock
• Placer Channel Sampling
• The Oquirrh Mountains, Utah
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
• Record $11 Million Fine for California Mine
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