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DOI Computers Back Online


You may have noticed that the Department of Interior’s (DOI) computers were disconnected for about 10 days during mid-March. The disconnected Internet service prevented miners and prospectors from accessing numerous online files, including all Bureau of Land Management websites and mining claim systems.

Ask The Experts - Can gold be found with sugary, crystalline quartz?


Looking Back


Excerpts from California Mining Journal, our original title, published 50 years ago this month.

Cyanide-Free Gold Separation


Some ores—mostly those with a high free gold content—are very amenable to gravity concentration. Well oxidized ores containing coarse gold are usually best for non-cyanide processes. Ores with significant sulfide content may require the...

Elizabethtown: Uncovering a Buried California Mining Community


Although there are many mining ghost towns in California, it is rare to find the ruins of one that was abandoned 140 years ago and then subsequently buried by hydraulic mining debris.

Melman on Gold & Silver


While there may have been events of the past month that were more important, nothing captured the imagination of the nation and much of the world like the election of Arnold Schwarzenegger as California’s new governor-elect. After weeks of on again, off again judicial rulings and a campaign of astonishing muckraking and innuendo-laden accusations, he did indeed enjoy a resounding victory.

Underground Mining: Stoping Methods


In an old mine that does not have stopes, you know the old miners did not take much if any ore out of that excavation. On the other hand, if you see large stopes within the mine you know that it is these places where the miners found profitable ore deposits within the vein.

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The Bawl Mill   • Ask The Experts - What’s the status of suction gold dredge permitting in California?   • Ask The Experts - How do I properly and safely dispose of blasting caps?   • Ask The Experts - How much silver per ton does it take to make a mine profitable?   • Ask The Experts - How clean do my gold concentrates need to be to pour a gold button or bar?   • Ask The Experts - What is the name and model of the old jaw crusher pictured in last month’s issue?   • Dredging Tips and Tricks: T-80 Air Compressor Maintenance   • Hard Rock 101: Mechanical Techniques   • Clearing the Nugget Trap with a Detector   • Resurrecting an Old Hard Rock Mine—Setting Up the Millsite   • Desert Prospecting Yields More Than Just Gold   • Memories of Shirttail Creek, Northern California   • Indictments Pile Up for Gold Traders   • Melman on Gold & Silver   • Mining Stock Quotes and Mineral & Metal Prices

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Seeking The Truth—A Letter From the Editor   • Legislative and Regulatory Update   • PLP Update: The Path for Legally Re-Starting Suction Gold Dredge Mining in 2021

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