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California Suction Dredging Update
August 2009 by Scott Harn
There are two separate issues threatening suction dredging in California.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.
Cobalt and Nickel in Missouri
Cobalt and nickel are tough silver-white metals, with similar physical properties, that frequently occur together in nature, along with copper sulfides. Cobalt and nickel are used as alloys, providing great strength and resistance...
Company Notes
• Great Quest Metals Ltd
• Fronteer Development Group
• Vista Gold Corp.
• NovaGold Resources
Gold Detecting—Are You Up For It?
“What does it take to get into gold detecting?” This may seem like a simple question, but the more I hear it, the more I realize it is a frequent question that needs to be answered.
Las Médulas—The Gem of the Roman Gold Mines
This mine was a real wonder of engineering, and the water supply and drifts had to be carefully managed to keep it in operation. In fact, it didn’t close due to lack of gold, but instead closed with the fall of the Roman Empire.
Gallium and Germanium in Utah
The high-tech industries are making use of a number of so-called “minor” metals, many of which are obtained as byproducts of copper, lead, or zinc mining. Some of the minor metals have properties that are ideal for certain applications and, in some cases, advancements in technology are being held back because of a shortage of the metals.
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Estimating the gold content of ores with gold, quartz and other minerals?
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