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The Significance of Boulders in Placer Deposits
February 2010 by Jim Halloran
The good news about boulders is they can trap heavy minerals. The bad news is moving them out of the way can be a real struggle.
Legislative and Regulatory Update
• State officials rip EPA plan for Coeur d'Alene Basin
• Judge keeps parts of suit over cyanide ban alive
• Change in arsenic standard will be felt in rural areas
Ask the Experts: Big rocks or small cobbles?
Border Silver
There is a sizable area that straddles the U.S.-Mexico border where native silver occurs in shear zones at relatively shallow depths. The district is in the low but rugged Pajarito Mountains, the highest point of which is 5,838 feet at Cerro Ruido, on the Mexican side. The deceptively rough terrain forced the first border surveyors, in 1855, to kill several mules and horses because of their injuries.
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.
Time to File Claims in Southern California
Bottom line for you fellow miners: file your claims now in these areas or risk being forever locked out!
Hard Rock University: Expensive Hobby or Real Business?
Improper sampling techniques lead to more avoidable heartache than almost anything else in micro mining.
Monetary Freedom and Accountability Act
U.S. Representative Ron Paul, a Republican from Texas, introduced legislation designed to curb the ability of the president and the treasury secretary to manipulate gold prices.
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