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Crushing, Grinding and Pulverizing

ball millThere are many different ways to get the gold out. We will take a look a few examples of crushing and grinding, and potentially which ores they may be best suited for.

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Romance of the Old Silver King


One of Arizona’s richest silver producers was the fabulously rich Silver King Mine of Pinal County. This incredible deposit was first discovered in 1875 during the construction of the famous Stoneman Grade, which connects present day Superior to Globe, Arizona. From 1877 to 1888 the famous Silver King Mine was in operation and during that brief span of time it produced an astounding $16,000,000 in silver.

Ask The Experts—Columbium/Niobium


Q: I have samples that have assayed 45-75% columbium/niobium. What is it used for? Do you know anyone who is actively processing this ore? Where should I go from here?

What Have You Got to Lose?


It’s accepted knowledge that wet methods will recover more fine gold than dry methods and processing the gravel as a whole will get more gold than only using a metal detector. The question is how much more?

Oil and Gas in Washington


The state of Washington may have undiscovered oil and gas resources, especially since drilling to date has been clustered in just a few areas.

Gold in Oregon


At least 6 million ounces of gold have been produced in Oregon since 1859. Since there are no accurate records of production prior to 1904, it is obvious that total gold production was considerably higher than that which has been recorded.

Exploration Drilling


Selected excerpt from USDA Forest Service Technical Report:
Anatomy of a Mine from Prospect to Production

The Bawl Mill


• His self-worth has no value…without a password
• Very costly accusations

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The Bawl Mill   • Legislative and Regulatory Update   • Ask The Experts: How many claims can I file in Arizona?   • Ask The Experts: What should I do with a large amount of old placer concentrates?   • Shaker Tables for Processing Hard Rock Ores   • Becoming a Successful Detectorist   • Hand Panning Micro-Fine Gold   • Sampling, Hydro-Shocking & Cleaning Quartz-Gold Specimens   • My Lucky Thirteen Nuggets   • A Break in the Weather   • From the Editor   • Prospecting Knowledge -- Pass It On!   • Melman on Gold & Silver   • Mining Stock Quotes and Mineral & Metal Prices   • Over The Divide: Miles John Mitchell

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