Prospecting & Detecting
Dredging Tips and Tricks: A Measure of Water Pump Efficiency
August 2020 by Harry Griffin
…as an academic argument, when mated to the appropriate engine, is the pump really moving water at the rate of 400 GPM?
Recent Prospecting in Plumas County
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.
Resurrecting An Old Hard Rock Mine
There were nice sections of vein material at the end of several drifts, like they just stopped work one day and walked away.
Buyer Beware! Counterfeit Metal Detectors
When I was recently in West Africa, I got to see and play with my first, phony, Chinese knock-off metal detector.
WWII Vet & Prospector Still Going Strong
Lately I’ve been having success utilizing two types of detectors in succession. The first is a pulse induction (PI) detector with a blanket-style antennae, and I follow it up with a very low frequency (VLF) detector.
Critical Minerals: Titanium—Part II
There are both hard rock and beach sand types of titanium deposits, but the hard rock deposits need to be at least 10 percent titanium while the beach sands often are economic with only two or three percent titanium.
Follow the Line
Four nuggets, ranging from one to four pennyweight, had been found originally. All four nuggets were found in a line about ten feet apart from each other.
Strategies for Detecting Heavily Pounded Areas
The problem is every other nugget hunter and drywash prospector had the same idea. As a result, you can spend days, weeks, and even months detecting these areas and not find a single nugget.
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• Hard Work Pays Off On Hard Rock
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• Detecting: Getting Away From The Heat And Into The Gold
• The Coolgardie Gold Mining Camp of Southern California
• Gold Prospecting for Better or Worse: How Curiosity Burst My Platinum Bubble
• Prospecting for Copper—What to Look for on the Outcrop
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