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Melman on Gold & Silver
December 2001 by Leonard Melman
Those who declared that our world would be forever changed after the events of September 11 certainly appear to have been right. Not only is the evening news filled with the events of the anti-terrorist war, but even our vocabulary has changed—along with our geographic knowledge. People who did not know Afghanistan from East Timor—and who could have cared less—can now recite at will facts about Kabul, Islamabad, Jalalabad and Uzbekistan.Gold in Michigan
Gold was discovered on the upper peninsula of Michigan around 1845, about the same time that rich iron and copper deposits were being put into production. Despite the discovery of gold and silver, most interest centered about iron...
Prospecting for Copper Ores—Part I
Copper is one of the metals that form the backbone of our modern civilization. Copper is an essential part of every computer, cell phone, automobile and household appliance.
Mining for Gemstones and Mineral Specimens
It is better in a gem and mineral mining operation that the driller, blaster and mucker be the same person in order to be able to predict placement of the desired mineral enriched pockets.
Selectable Frequency vs Multi Frequency Detectors
I like to think in terms of “conductive mass” because it is a combination of both the conductivity of the metal and the size of the target that determine how a detector sees conductivity.
Critical Minerals: Tungsten
Because tungsten minerals are heavy, exploration can be done using stream sediment samples. Prospectors looking for gold have found scheelite or wolframite in their placer concentrates, and in some cases this has led them to make important tungsten finds.
Gondwana Gold Gravels
The German scientist, Alfred Wegener, came out with his theory of "continental drift" in 1912. He was considered a crackpot and it was half a century before geologists and planetary scientists began to take a second look at his theory.
China Ups Investment in Foreign Minerals
Direct investment overseas by Chinese companies rose 27 percent over a year earlier to $3.6 billion in 2004, highlighting the country’s growing economic influence, the government reported.
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