All Articles
The Forgotten Specimen—Part I
June 2009 by Jonathan Porter
In these types of cases I tend to listen to what my metal detector is telling me. The machine was very quiet, suggesting my initial impressions were right about the ground make up.
Additional articles that might interest you...
A Word From the Editor
January 2009
Last year was an extreme roller coaster ride for the economy, mining companies, and precious metal prices, and 2009 looks like it’s shaping up to be another wild ride.
Last year was an extreme roller coaster ride for the economy, mining companies, and precious metal prices, and 2009 looks like it’s shaping up to be another wild ride.
Guest Editorial—President's Land Plan Implements Unratified Treaty
April 2000
"The President's plan to lock-up an additional 40-million acres of wilderness in 35 states, is a blatant step toward the total implementation of the aims of the unratified Convention on Biological Diversity."
"The President's plan to lock-up an additional 40-million acres of wilderness in 35 states, is a blatant step toward the total implementation of the aims of the unratified Convention on Biological Diversity."
How PGMs Affect Assay Beads
September 2001
Most fire assayers are trained to observe the cupelled beads very carefully, noting any discoloring or surface roughness that might indicate that one or more of the platinum group metals (PGMs) are present. The “clues and tests” I have included in this article stem from several sources, including my 35 years of experience performing torch assays...
Most fire assayers are trained to observe the cupelled beads very carefully, noting any discoloring or surface roughness that might indicate that one or more of the platinum group metals (PGMs) are present. The “clues and tests” I have included in this article stem from several sources, including my 35 years of experience performing torch assays...
Underground Geologic Mapping
February 2000
Mapping geology underground is not difficult if one knows the procedures. This article presents the procedures that will allow any miner to produce a geologic map of their workings.
Mapping geology underground is not difficult if one knows the procedures. This article presents the procedures that will allow any miner to produce a geologic map of their workings.
The Giant King Mine
July 2014
Most gold-bearing veins in this region are controlled by fractures associated with the Melones Fault, a late Cretaceous structure that is 108 to 127 million years old.
Most gold-bearing veins in this region are controlled by fractures associated with the Melones Fault, a late Cretaceous structure that is 108 to 127 million years old.
PLP Update
July 2019
While progress with Congress has been slow, the Trump administration has taken the lead to start making needed changes at the Department of Interior and US Department of Agriculture to support miners…
Rediscovering Placerville, California
February 2011
Several areas came to mind, but each was eliminated for one reason or another. One that seemed to be hanging on was the old historic mining town called Placerville.
Several areas came to mind, but each was eliminated for one reason or another. One that seemed to be hanging on was the old historic mining town called Placerville.
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The Bawl Mill
• How to Utilize Assays and Evaluate Results
• Mining Expedition at Eagle Rock—Part II
• Broomstick Gold
• Electra Gold Sees Potential in Other Minerals & Metals
• Miner's Cabin—Red Shack Territory
• "New" Gold Rush Has Arrived
• NASCAR Driver Turns Prospector
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
