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...
First Load of Concentrate Leaves Reopened Ruth Mine
November 2004
Five years after depressed copper prices forced the Robinson mine to shut down, the first truckload of concentrate pulled out in what its new owner sees as a renewal of the facility and Ely-area residents hope is a rebirth of the region.
Five years after depressed copper prices forced the Robinson mine to shut down, the first truckload of concentrate pulled out in what its new owner sees as a renewal of the facility and Ely-area residents hope is a rebirth of the region.
High Court to Rule on Kensington Tailings
February 2009
A case before the Supreme Court could set a precedent for how mining waste is disposed of in streams, rivers, lakes and even wetlands.
A case before the Supreme Court could set a precedent for how mining waste is disposed of in streams, rivers, lakes and even wetlands.
Glen's Big Find
November 2008
One of the largest gold nuggets ever found with a VLF metal detector: I got a huge signal, and I was thinking it was just another piece of junk—perhaps an old can or piece of a shovel.
One of the largest gold nuggets ever found with a VLF metal detector: I got a huge signal, and I was thinking it was just another piece of junk—perhaps an old can or piece of a shovel.
Iron Ores and Iron Mining
September 2015
For more than 40 years, iron ore prices have been decided by private negotiations conducted between the largest of the iron miners and the largest steel producers. These two sides dominate both the spot and contract iron ore markets.
For more than 40 years, iron ore prices have been decided by private negotiations conducted between the largest of the iron miners and the largest steel producers. These two sides dominate both the spot and contract iron ore markets.
Company Notes
December 2005
• Couer Alaska
• Formation Capital
• Revett Minerals
• Pathfinder Resources
• Commander Resources
• Couer Alaska
• Formation Capital
• Revett Minerals
• Pathfinder Resources
• Commander Resources
Undiscovered Placer Deposits in Alaska
November 2010
These conditions don’t just apply to Alaska and the Yukon; they apply to western Canada and even to the mountainous western United States.
These conditions don’t just apply to Alaska and the Yukon; they apply to western Canada and even to the mountainous western United States.
Ask The Experts—Can you help explain the ratings in Melman On Gold & Silver?
May 2007
Q: I’m a fairly new subscriber. I enjoy Leonard’s financial column but his ratings at the end don’t seem to make sense. He will highlight problems with the economy but rate it “Positive.” Why is that?
Q: I’m a fairly new subscriber. I enjoy Leonard’s financial column but his ratings at the end don’t seem to make sense. He will highlight problems with the economy but rate it “Positive.” Why is that?
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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
