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.
As the ground thaws and dries out and the warmth of spring starts to settle in, it’s time to start afresh with a new prospecting season.
Science has shown, over the past few centuries, that there is a direct correlation between certain plants and their geophysical surroundings.
If Epd is larger, then the compressor will be spinning faster than the manufacturer’s maximum specified RPM and might destroy itself. If this happens, then the compressor again might not produce enough air to support a diver. Neither is a desired outcome.
Back at the entry point of the mine, we took turns slowly crawling down the slope leading into the mine portal with our metal detectors, hard hats and flashlights. The mine was hand dug and is about 75 yards long.
From this I inferred that engine 2 had a carburetor problem. In this article, I discuss the specific engine/carburetor problem, and the surprising solution to this problem.
Let’s take a look at these important property aspects individually, because they all affect the value of a property and how much mining companies might or might not be interested acquiring it.
We dug and extracted for two more hours. This time, as I dumped the concentrates, I saw a piece of gold three-fourths of an inch long and as big around as a pencil.
The Bawl Mill • Our Readers Say • Ask The Experts - Could I stake out a 20-acre claim with a waterway running through it just as I would a lode claim? • Ask The Experts - Do I have any grandfathered rights that post FLPMA claim holders do not have? • Legislative and Regulatory Update • Dredging Tips From The Golden Rogue • Understanding and Prospecting Benches • Gold in the Slate Creek Basin • Deductions: Get 'Em While You Can • Endurance Is Golden • Melman on Gold & Silver • Mining Stock Quotes & Mineral and Metal Prices • The Preacher of Sheeps**t Flats