All Articles
The Basics of Small-Scale Heap Leaching with Cyanide
August 2007 by Chris Ralph
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.
Additional articles that might interest you...
Melman on Gold & Silver
September 2003
After months of war news, rising unemployment, declining economic activity and heightened world tensions, the news background took a decided turn for the better last month—at least on the surface. The war in Iraq has died down to only an occasional moderate outburst. Tensions between Israel and its Palestinian neighbors appear to be on the decline. New unemployment claims have fallen and...
After months of war news, rising unemployment, declining economic activity and heightened world tensions, the news background took a decided turn for the better last month—at least on the surface. The war in Iraq has died down to only an occasional moderate outburst. Tensions between Israel and its Palestinian neighbors appear to be on the decline. New unemployment claims have fallen and...
Legislative and Regulatory Update
December 2002
• Federal election results should be favorable to miners
• Utah residents reject proposed National Monument
• Fish and Wildlife told to disclose locations of endangered species
• Federal election results should be favorable to miners
• Utah residents reject proposed National Monument
• Fish and Wildlife told to disclose locations of endangered species
Greenstone Belts in Minnesota
August 2005
Greenstone is a dark greenish-black basaltic rock which, along with chloritized schist, forms belts up to 50 miles wide in northern Minnesota, in rocks of Late Archean age. Most belts are 2.6 to 2.9 billion years old.
Greenstone is a dark greenish-black basaltic rock which, along with chloritized schist, forms belts up to 50 miles wide in northern Minnesota, in rocks of Late Archean age. Most belts are 2.6 to 2.9 billion years old.
Picks & Pans: Dredging at Douglas Creek, Wyoming
March 2003
Labor Day! The last chance of the year to do some dredging in Wyoming. Wyoming’s dredging season runs from June through the Labor Day weekend.
Labor Day! The last chance of the year to do some dredging in Wyoming. Wyoming’s dredging season runs from June through the Labor Day weekend.
Higher Zinc Price Creates Opportunity
April 2005
Zinc is brittle and crystalline at ordinary temperatures, but when heated to between 110°C and 150°C it becomes ductile and malleable; it can then be rolled into sheets. The bluish-white metal is used principally for galvanizing iron, but also...
Zinc is brittle and crystalline at ordinary temperatures, but when heated to between 110°C and 150°C it becomes ductile and malleable; it can then be rolled into sheets. The bluish-white metal is used principally for galvanizing iron, but also...
Subscription Required:
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
