Prospecting & Detecting
An Interview with Minelab Engineer Mark Lawrie
January 2018 by Chris Ralph
The design of metal detectors well-suited for prospecting is an interesting process and not necessarily an easy one to achieve. It is a combination that blends the desires of what prospectors would like, the requirements of sales people and dealers, with the science and physics of what the electronics can achieve.
My Great Nevada Adventure
…with renewed determination and a belief in success, I did finally find a nugget. It was there waiting under a bush not 50 feet from my truck.Northwestern Alaska Mineral Resources
Gold and jade are actually only minor mineral resources for the Northwestern Alaska region as a whole. Modern prospecting has focused more on base metal than precious metal resources.
Deep Nuggets From The Strange Little Patch
I began detecting at the bottom of the gully and started making my way upstream. About mid-way there was a nice, flat stretch for about ten feet.
The Subsurface Suction Dredge
The problems of the submersible dredge tube are addressed by the subsurface dredge, where the enclosed sluice recovery tube is suspended from a flotation assembly...
Recovering Fine Gold with Oleophilic Adhesion
Oleophilic means "affinity to or attracted to oils," and this includes gold an diamonds.
The World of the Simple Gold Pan
There are so many, many different types of gold pans on the market that I thought it would be worthwhile to take a look at the world of the simple gold pan.
Volume is the Key to Success
While recovery rates are important, they must necessarily be secondary to the volume of material processed. Running more material at lower recovery rates is generally preferable to increasing the efficiency of the system.
Subscription Required:
The Bawl Mill
• Legislative and Regulatory Update
• California: The Land of Big Nuggets—Part II
• How to Interpret Assay Values
• Bedrock Nugget Hunting: Tools of the Trade
• A Primer on Bitcoin and Other Cryptocurrencies
• Gold Hunting on Libby Creek
• PLP and MMAC Update
• Man's Best Friend
• Third Largest Nugget in Existence Returns to Dallas
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
Free:
