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.
Reminder: Annual Claim Filings Due
Please note that new mining claims filed on or after September 1, 2019, will be subject to the new fee schedule.
I Was Looking for Gold But I Found Jade
Excited for this first notable evidence, I returned to that riverbed, looking for another paystreak and obviously more jade.
Our Readers Say
• Prospecting for Diamonds in Kimberlite by W. Dan Hausel
• Miners referring to their activity as “recreational”
Australian Gold Adventure
I had my heart set on finding a large nugget on this trip, and it seemed to me that pounding known patches was not likely to turn up a monster. Inevitably I would spend at least half my day wandering off...
California Sniping
I opted for the underwater portion of the river. All I have to do is float down the river and pick large flakes and small nuggets out of cracks and crevices while staying cool in the summer heat.
Ask The Experts
Can a metal detector be used to find limonitic gossan material?
Coprolite—A Prospector's Tale
Gold nuggets come in all forms, but I never expected that dinosaur nuggets would too, and at a decent price.
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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
