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.
More and more miners and prospectors are using personal computers and Global Positioning System Satellite receivers to satisfy the needs of vocations or hobbies.
The mine site consists of river gravels from an ancient channel covering over 20 acres, and the place is covered with very large river rock and small tree overgrowth.
Gemstones are timeless treasures of beauty. The extraordinary and satiated colors of many gemstones enhance their aesthetic beauty. Gems have been sought for personal adornment since the beginning of time and such minerals...
Rocks and minerals associated with clay seam gold deposits in southern Oregon are often in sedimentary rock units at least partially metamorphosed into argillite. They are also associated with mafic volcanic rocks, basalts and gabbro that...
Lately I’ve been having success utilizing two types of detectors in succession. The first is a pulse induction (PI) detector with a blanket-style antennae, and I follow it up with a very low frequency (VLF) detector.
On a personal level, I have been part of the business, brokerage and financial columnist worlds for 45 years, since the mid-1960s, and in all those years, I have never seen a collection of negative news items similar to what has been published during the past month. In short, taken together they may very well be describing the end of the economic world systems as we know them.
I thought it might be worthwhile to take a look at the basics of this important mineral separation technique and how a miner can use it to recover the values out of an ore.
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