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California Diamonds

Most of the world's diamonds come from Africa and Australia, but several new discoveries in the United States and Canada have spurred interest.

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Ask the Experts—Where can I find plans for a home-built suction dredge?


Q: Years ago I had plans for building a home-built suction dredge called the Spartan dredge. I really loved that dredge. I now have a 12-year-old son who wants to start mining. We wanted to build our own at home but I’ve lost the plans.

Surviving The Boom and Bust Cycle


Back when I was in college, when I first started classes, the demand for new engineers was so strong that every graduate had multiple job offers without even trying.

Rent, Lease, or Own Your Equipment


Today, renting, leasing, financing and outright purchasing are simply tools of the trade for many financial professionals.

Gold Deposition and Gradients of Placer Streams—Part I


When placer miners from the gold rush era began experimenting with the slope of their sluices, they must have pondered the ideal slope for trapping gold in a creek bed too. Logic suggests the same is true for streams...

State's Only Gold Mine Processes Last Precious Ore


South Carolina's last operating mine, Kennecott Ridgeway, processed the final gold and silver it had extracted from two pits in southern Fairfield County.  But even though the mining and processing is done, the work at Kennecott is far from over...

18 Acquitted in Massive Brussels Diamond Heist


The massive 2013 theft, in which tens of millions worth of gems were stolen from the hold of a departing Swiss-bound plane, had all the hallmarks of an “Ocean’s Eleven” operation. And it still might still get a Hollywood ending.

Lease Issued For Potential Mine Near Mount St. Helens


A hardrock minerals lease and environmental assessment issued recently give Idaho General Mines the right to apply to explore property near 5,400-foot Goat Mountain, north and east of the Mount St. Helens National Volcanic Monument.

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The Bawl Mill   • Gold Hunters Hit the Web in Fight with Missile Range   • Religious Broadcaster in Liberia Mining Venture   • Kazak Government Collects Gold from Residents   • Recreational Gold Panning on the South Yuba River   • Groups Wonder Meaning of Call for More Wilderness   • Mining Claim Maintenance Fee Due   • Desert Bonanza   • Gold Near Boulder, Colorado   • Company Notes   • The Carissa Gold Mine, South Pass, Wyoming—A Sleeper?   • Tantalum   • Building the American Dream   • Picks & Pans: A Pay Streak in Slate   • Elizabethtown: Uncovering a Buried California Mining Community   • Melman on Gold & Silver   • Mining Stock Quotes and Mineral & Metal Prices   • Silver Demand Driving Mine Production Up—Mexico Remains Number One Producer   • Looking Back

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