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Hot Ground or Large Deep Gold?

While detecting for gold nuggets with a pulse induction machine, most of the signals we encounter have a normal “wee-ooo” sound. However, while swinging larger search coils, the bigger deeper nuggets can produce a...

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Drywashing in Black Canyon, Arizona


After the hike and a quick snack break we gathered a few buckets of material to really dial in the drywasher for the most efficient recovery. This involves leveling the unit, setting the riffle box drop angle and regulating the speed in which the material is processed.

Green Valley Gold District, Payson, Arizona


Most gold-bearing quartz veins found in the district were fracture fillings in faults enclosed by crushed quartz zones along their margins. Since the host rocks were often extensively weathered, portions of the veins stood out as positive, resistant outcrops. The gold-bearing veins ranged from a few inches wide to the vein at the Gowan mine that was as much as 12 feet wide. 

Legislative and Regulatory Update


  • Proposed budget for EPA
  • California SB 1222
  • 640 million acres and counting
  • Gold and silver bullion

Lost Canyon


These are the basic gold sampling tools we used on this exploration trip.The name makes you wonder, “Just how remote is this place?” It’s in the Tahoe National Forest and the Canada Hill Mining District, an area of steeply cut canyons that averages about 5,000 feet in elevation.

The Art of Finding Coarse Gold Part IV—Recovery of Coarse Gold From Alluvial Placers


This last installment in the series will look at methods for finding and recovering coarse gold from alluvial (river and stream) placer environments. Unlike the residual and eluvial placers that we have considered previously, the force of flowing...

Ask the Experts


• Using drywashers to work desert gravels

Critical Metals: Copper


From time to time I’ve been doing a series on critical metals and how important they are to our complex and technological society. This month we are going to take a look at copper, and how important that metal is to our modern lives.

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The Bawl Mill   • Prospectors & Attorneys   • Technology Opens Promise, Perils of Ocean Mining   • Finding Diamond Deposits With Your PC—Part II   • Mining Expedition at Eagle Rock—Part I   • Subscriber Locates Large Diamond at Arkansas Diamond Park   • Silver City Prospecting Adventures   • Melman on Gold & Silver   • Mining Stock Quotes and Mineral & Metal Prices   • Gold Pours Again at Jerritt Mine

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Legislative and Regulatory Update   • Allied Nevada Reactivates Hycroft Mine

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