Prospecting & Detecting
Dredging Tips and Tricks: T-80 Air Compressor Maintenance
June 2020 by Harry Griffin
The next morning, I retrieved the compressor and again attacked the sticky head bolt. As if by magic (and some applied physics) the head bolt sighed and finally broke loose.
California: The Land of Big Nuggets—Part I
The nugget sat there in plain sight, though it was covered in dirt, while hundreds of people had passed that way every day.
The Mole
My wife Dorothy has always enjoyed tent camping. She thought she was really roughing it at established campgrounds until I convinced her to take a trip with me to drywash for gold in a remote corner of an arid desert wilderness...
All About Native Silver
Some of the wire forms are strange and fantastic, with wires sticking out in twisted, seemingly random directions. Others have deformed crystals and all of them have significant value to collectors.
Study Confirms Mercury Levels Safe in California's Gold Country
While the Water Board documented the selenium levels in fish and noted they exceed the levels of mercury, they have yet to acknowledge the numerous scientific studies that show selenium effectively neutralizes the effects of mercury.
Small High-Grade Pocket Districts
…the excitement passed so quickly that little work was done, but they still have good potential, and I find they are not as well-known and not hit so hard by most prospectors.
Weathering, Erosion and Placers
The big interest to prospectors thinking about the effect of erosion is not what might happen long into the future, but what they might find in the rivers later this summer when the water levels go down.
Rediscovering Placerville, California
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.
Subscription Required:
The Bawl Mill
• Our Readers Say Re: It's Time to Get the Heck Out of China
• Ask The Experts - What’s the status of suction gold dredge permitting in California?
• Ask The Experts - How do I properly and safely dispose of blasting caps?
• Ask The Experts - How much silver per ton does it take to make a mine profitable?
• Ask The Experts - How clean do my gold concentrates need to be to pour a gold button or bar?
• Ask The Experts - What is the name and model of the old jaw crusher pictured in last month’s issue?
• Hard Rock 101: Mechanical Techniques
• Clearing the Nugget Trap with a Detector
• Resurrecting an Old Hard Rock Mine—Setting Up the Millsite
• Desert Prospecting Yields More Than Just Gold
• Memories of Shirttail Creek, Northern California
• Indictments Pile Up for Gold Traders
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
Free:
Seeking The Truth—A Letter From the Editor
• Legislative and Regulatory Update
• PLP Update: The Path for Legally Re-Starting Suction Gold Dredge Mining in 2021
