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Turning Acid Mine Drainage Into Drinking Water?—Grass Valley Company May Have the Answer

HPT Research recently tested their patented process for treating Acid Mine Drainage (AMD) on thousands of gallons of contaminated water at the Mammoth Mine.

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Looking Back


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

The Carissa Gold Mine, South Pass, Wyoming—A Sleeper?


The Carissa is part of a patented group of claims (private property) near South Pass City in the southern Wind River Mountains of western Wyoming. The mine lies a short distance southeast of State Highway 28 which runs north to Lander and provides excellent access to the area.

Nice Specimen Gold Recovered in Northern California


Each specimen is carefully examined to determine if it would be beneficial or not to use an acid treatment to reveal more of the gold.

Simple Sluice Design


One of the first pieces of prospecting equipment I acquired was a really nice little aluminum backpack sluice. I’ve used it for some time now and have always been impressed with how well it works for keeping the fine wire gold. But ever since I got on the Internet and started looking around for prospecting stuff, I have been toying with the idea of making a flexible conduit sluice.

Demand for Copper Boosts Zambian Mining


Surging global demand for copper has breathed new life into the mining industry in Chingola, a short drive from the Congolese border on top of some of the richest copper deposits in the world.

Melman on Gold & Silver


I believe gold and silver prices, to at least some extent, negatively mirror the society's confidence in the ability of government to continue providing economic and social services.

Ask the Experts


What is the ceramic-like material embedded with gold?

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The Bawl Mill   • Over the Divide   • A Word from the Editor   • Guest Editorial—Globalizing Mining in America, Part II   • Gold Point, Nevada—A One-Man Mining Town Restoration   • Rare Coin Makes a Mint at Auction   • Letter to the Editor   • Jackson Hole Gold, Wyoming   • Picks & Pans: Big River Dredging in Northern California   • Fake Assays & Assayers   • Everything You Need to Know About Gold Wheels   • Exceptional Gold Dredging in New Zealand   • Lightning Creek, British Columbia   • Mine Reopening Could Revive Region   • Willow Creek Dredging Trip   • Melman on Gold & Silver   • Mining Stock Quotes and Mineral & Metal Prices   • More Treasure From Sunken Ship

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