The Boludo Placers, Sonora
November 2004 by Edgar B. Heylmun, PhDThe Boludo placers described here include gravels that have been listed under many different names, including Altar, Golden Triangle, Llanos del Oro, San Francisco, and Trincheras, among others. The placers are on desert flats at the northwest end of Sierra Santa Rosa, about 2,600 feet above sea level. It is in a region of northwest-trending mountain ranges separated by broad desert valleys.
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.
My plan was to go up the canyon along a ridge and then drop into the canyon whenever I came across a spot that might give me reasonable access.
Here's the kicker—for every lost flake there was a five minute penalty added to the time. Lost gold generally meant you didn't make it past the preliminaries.
Only the famous Kennecott copper mine was able to continue operating through the Depression owing to the exceptional richness of its ore.
On Saturday, January 27, 2007, six of us began a trip to Pickering Bar on the North Fork of the American River. It was 7:30 am and we had our engines running to begin the first leg of our two and a half hour trip to get there.
Few areas of the world have a mining history comparable to Canada’s Yukon Territory thanks to the fabled Klondike Gold Rush, which took place from the late 1890s into the early years of the Twentieth Century. Tens of thousands of prospectors and treasure hunters poured into the Territory following the discovery of placer gold...
The entire petroleum complex has once again taken center stage in the world’s financial markets as prices for crude surged to near all-time highs at $55 per barrel and associated products such as heating oil and unleaded gasoline (see chart analysis below) soared through previous peaks. What made these new rallies so remarkable...
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