Ask the Experts

March 2014 by Chris Ralph

Weathering, Erosion and Placers

April 2017
The big interest to prospectors thinking about the effect of erosion is not what might happen long into the future, but what they might find in the rivers later this summer when the water levels go down.

Ask the Experts

August 2013
Q: Will my detector react to fine gold?

Heavy Glacial Rocks and Gold in the Midwest

December 2013
Over the years, I've noticed a pattern in the type of rocks associated with the best gold deposits in Midwestern glacial gravel.

Study Confirms Mercury Levels Safe in California's Gold Country

July 2013
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.

Dredging Safety: Don't Ignore The Warning Signs

April 2018

At first, I tried to shift things around, but then a hand with a rock would appear, so I would stop trying to adjust my gear and grab the rock to keep things moving.

Ask the Experts

February 2015
• Drones for the independent prospector

Mining for Gemstones and Mineral Specimens

August 2013
It is better in a gem and mineral mining operation that the driller, blaster and mucker be the same person in order to be able to predict placement of the desired mineral enriched pockets.

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