Prospecting & Detecting
Q&A With Detector Designer Dave Johnson
September 2011 by Chris Ralph
...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.Prospecting for Gold at Green Valley
In October, five of us decided to take an exploration trip into an area called Green Valley. This was perhaps ten miles upstream from where we had gone in September and the difficulty was access. One would think that based on the name it was an easily accessible area not far from a nearby town. This couldn’t be more wrong.
Prospecting Hard Rock
We panned out maybe three gold pans of the material and we were shocked at the gold that was there. This rock appeared to be rich.
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.
Watch Out for Split Estates When Filing Your Claim
The only thing that saved me was talking to a local miner who gave me a “heads up” that private individuals owned all the mineral rights in that section.
Heavy Glacial Rocks and Gold in the Midwest
Over the years, I've noticed a pattern in the type of rocks associated with the best gold deposits in Midwestern glacial gravel.
Crushing Quartz in Calaveras County: A Placer Miner Learns New Tricks
I had never run an impact mill before, but anything involving rocks, water and a big electric motor sounded great.
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