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January 2011 by Dr. Ralph E. Pray
Suggestions for claim jumpersThe Guyana Highlands
The Guyana Highlands referred to here are a tropical upland area that extends from French Guiana on the east to Colombia on the west, with elevations reaching 9,219 feet. It occupies a vast and remote region between the Orinoco River on the north and the Amazon River on the south. There are mountains, tablelands, mesas, and swamps, largely impassable to those on foot.
Mining Stock Quotes and Mineral & Metal Prices
Critical Metals: Antimony
I’ve been taking a look at the mining and uses of a number of critical metals in series of articles, and it’s time to take a look at antimony.
Picks & Pans: Dredging on the Arkansas
I had been looking forward to this trip since last year when the annual trip had rewarded me with a ¾-pennyweight nugget.
Placer Gold Deposits in the Western States
…to see the huge differences between the gold production amounts of the Western States, let’s look at the gold production—both hard rock and placer—of these 13 states up to the present.
Gold Recovery with Centrifugal Bowls
Centrifugal bowls are very efficient, and with proper operation they can consistently achieve gold recoveries above 95% with gold of about 50 mesh size.
Melman on Gold & Silver
If there is one word which seems to describe the past month on so many fronts, it is the word "dysfunctional." The tone was set when "American Beauty" won the Academy Award for "Best Movie."
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