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Large Scale Mining

Gold Pour Signals Revival in the Mother Lode

Miners are digging again where their forebears once unearthed riches from eight historic mines that honeycomb Sutter Gold Mining Company’s holdings about 50 miles southeast of Sacramento.

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Resurrecting an Old Hard Rock Mine—Setting Up the Millsite


One of the first things we did while looking at buying the equipment was figuring out how it would dovetail into the milling process we already had in mind.

New Technology for Extracting Lithium To Be Tested in Nevada


Production of the Lithium will be completed in a 48-hour process with much less waste and a substantial increase of recovery rates from around 40% with conventional evaporation to near 90%.

Who is a Qualified Person?


So you think you have an ore deposit? The work has been long and hard, but there are a few drill holes, lots of samples and assays. The data is in a reliable computer and there may be a mine at the end of the tunnel. What is the likelihood of a profitable operation? Can you raise capital for development or exploration?

Gold and Silver Deposit May Be World's Largest


A crater in an undersea volcano off Japan may contain the world's largest gold nugget ever found...

Hard Rock 101: Advanced Micro Blasting


They… create negligible fumes and much less fly rock than blasting. Below are some tips on maximizing your effectiveness with these tools.

Determining The Optimal Crushing Size for Gravity Recovery


It’s not easy to figure out what is best without testing, and so a certain level of confusion has developed about how small the ore ought to be crushed.

Reminder: Annual Claim Filings Due


Please note that new mining claims filed on or after September 1, 2019, will be subject to the new fee schedule.

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The Bawl Mill   • From the Editor   • Ask the Experts   • Iron Minerals, Your Detector and Gold   • The Robinson Mine—Big Things Happen Here   • Forty-Six Nuggets   • Customizing Your Dredge   • Small Miner Beats Forest Service in Court   • Using Vegetation and Soil Conditions as Prospecting Aids   • Prospecting for Diamonds   • Green Valley Reconnaissance   • Melman on Gold & Silver   • Mining Stock Quotes and Mineral & Metal Prices

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