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How to Utilize Assays and Evaluate Results

Assay furnace - photo courtesy Inspectorate AmericaAsk the lab manager how your ores will be tested, and ask to see the equipment that will be used. If you are told it’s a secret that can’t be explained, you need another assayer.

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Ask The Experts - Do you think it’s realistic for a detectorist to recover a couple of ounces per week if working full time?


Cripple Creek, Colorado


The historic mining town of Cripple Creek (population 600) is 43 miles, by paved highway, west of Colorado Springs, almost two miles high in the Colorado Rockies.

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.

Legislative and Regulatory Update


• A bumpy ride for miners...
• Speaking of climate change...
• "Recreational" mining

News from the Editor


Our goal is to reach out to the next generation of prospectors and miners who might prefer reading our monthly issues on their desktop computer or portable device.

USGS Reports Increase of Imported Minerals


Since 1993, US reliance on imports of raw and processed materials of mineral origin has increased more than seven fold.

Soft Rock Excavation Techniques


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