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The Old Dutch Cleanser Mine

The naturally occurring white scouring powder called Old Dutch Cleanser, originally from Kern County, California, is a household helper known throughout America. As a sink, stove, and tub cleaner, the abrasive pumicite is one of...

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Using Mineral Deposit Models


Mineral deposit models have been used in mineral exploration for thousands of years. They were obviously not called models as we use the term today, but the idea of accumulating data to predict mineral deposits is the same. Models can be valuable tools in mineral exploration and assessment and are routinely used by major mining companies in locating and evaluating mineral deposits.

Sampling for Success—Part II


The first and most important thing of the sampling process is to try to be as unbiased as possible. There is a natural tendency to select rock that looks the best—even unconsciously.

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New Rules to Impact the Lease/Buy Decision


Whether to buy or lease is a question facing many small-scale operators and prospectors even as credit becomes more readily available. While there is no one correct answer that fits every mining operation or business, compared to the simplicity of buying, leasing is far more complicated and may be getting more complex.

Golden Age of Gold Dredges


Over one hundred years ago, gold mining in California saw a radically new method tried out in the major rivers of the Central Valley. Large gold dredges floated lazily but noisily on the waters, bringing up the rich gravel from deep below. With none of today’s environmental restrictions on such methods, the landscape was reworked into a maze of patterns along the rivers.

Continuing Hard Rock Exploration


We had been picking away at it, but the going was mightly slow. Why not use some explosives to advance a little quicker?

Creating Your Own Luck


Now that you are actually going to be out there doing some prospecting, I may be able to help.

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The Bawl Mill   • The Ferris-Haggarty Copper-Gold Mine, Grand Encampment District, Wyoming   • Directory of Active Mines in Arizona Available   • Picks & Pans: Gold Prospecting on the East Fork River, Alaska   • Beryllium in Nevada   • Company Notes   • The Cemetery Rush   • Border Silver   • Grandfather John's Notes   • ICMJ's 12th Annual Photo Contest Results   • Tiffany & Co. to Open Plant in Northern Canada   • The Patio   • Looking Back   • Melman on Gold & Silver   • Mining Stock Quotes and Mineral & Metal Prices

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