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.
With one outstretched hand grasping the bottle and the other waving at air, I moved forward feeling for the tent. No tent. No tree.
One of the most memorable nuggets I found in Australia was detected on the very last day that I was out prospecting. I was going along swinging my coil and I came across a blaring loud signal that almost blew my ears off.
We are both very experienced working this type of ground, and we quickly found the pay layer where we would focus our efforts. The bedrock has good gold, but so does the red hard pan.
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.
In my early days of nugget hunting things were fairly simple. Just headphones, a pack, a detector and a small pick were all I needed for my search for great wealth.
He no sooner had turned around and started moving when I hollered again that I had another nice one.
Plumas has been historically rich in gold because of its favorable geology. The Melones Fault trends north-south through the county and many rich gold-bearing districts lie along its course.
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