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Central Coast Ranges
May 2003 by Edgar B. Heylmun, PhD
A series of coastal ranges, separated by narrow valleys, characterize coastal California south of Monterey. The mountains rise to 5,800 feet in elevation, with annual rainfall varying from 12 to 64 inches, depending on elevation and exposure.Ask The Experts
Can a metal detector be used to find limonitic gossan material?
The Bawl Mill
• How about another slice of pie?
• An Inconvenient Interview
• Name That Tune
The Basics of Small-Scale Heap Leaching with Cyanide
In 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.
Melman on Gold & Silver
As noted on page 26 of this publication, your columnist spent five days in January immersed in two important conventions regarding precious metals mining and, of all the pieces of information bandied about within the mining community, one unbelievable set of numbers, little known or noticed by the public—but of immense potential impact on our world of gold and silver...
Small-Scale Concentrating and Recovery Methods
The first step in my recovery process after milling the ore to the desired size is to table it. On this particular ore, I get good results milling it to minus 100 mesh.
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The Ball Mill
• Our Readers Say
• WMD Raffle Raises Funds for Lawsuit
• Gold in Alabama
• From the Editor
• Yukon Placer Miners Fighting Extreme Discharge Limits
• Picks & Pans: Red Beryl Mining—Beaver County, Utah
• The Investigation
• A Gold Detector Sitting in a Closet Only Finds Dust—A Potpourri of Detector Tips
• Poll: Montana in Favor of Repealing Anti-Mining Initiative
• Platinum in Laccoliths
• Mining Stock Quotes and Mineral & Metal Prices
• Looking Back
• Melman on Gold & Silver
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• BLM Runs Check on Assay Services
