The Basics of Small-Scale Heap Leaching with Cyanide
August 2007 by Chris RalphIn last month’s article I talked a bit about opportunities for heap leaching small hardrock deposits. This month I’m going to talk about the basics of putting together a heap leach project, including building the pad and leaching the ore.
This past four weeks saw a major shift in the scope of financial headlines. Where recent months have focused almost entirely on the “subprime” crisis and resultant credit problems, the US Dollar itself became the center of attention last month as it entered a period of severe decline against the Euro, Australian Dollar, British Pound, Swiss Franc and Canadian Dollar.
Greenpeace sued for racketeering
A recent weekend trip found us leaving the Grass Valley, California area to meet up with some friends in Downieville.
As decade-high gold and silver prices spark a renewed interest in mining in the West, there are few mining education programs and fewer students earning mining engineering degrees due to two decades of decline in the US mining industry.
Any illusions that the world had become a safer place were certainly put into serious doubt by events over the past few weeks. During that time we have seen a major Israeli incursion into Gaza in retaliation for Hamas attacks on Israel, huge public demonstrations and accusations of fraud regarding the recent election in Mexico and, most recently, terrorist bombings in Mumbai (Bombay), India, which killed about two hundred people and seriously disrupted India’s financial center.
In an important victory for western property owners, the United States Ninth Circuit Court of Appeals has ruled for Pacific Legal Foundation (PLF), and Idaho rancher Verl Jones’ family, in a closely watched case that addresses the standard by which injunctions can be issued under the Endangered Species Act (ESA).
The Bawl Mill • Ask the Experts • Will California Dredging Survive? • Prospecting For Gold—The Osborne/Herman Hardrock Mine • Journeys in the Kingman Quadrangle • From Spanish Mine to Modern-Day Exploration: The Historic Gold-Silver Camp of Palmarejo • Spanish Police Seize Ship in Treasure Fight • Looking Back • Gold Mine Proposed in Jefferson County • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices