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Mineralized Calderas in Colorado
May 2002 by Edgar B. Heylmun, PhD
A caldera is a large circular volcanic depression caused by collapse due to the removal of molten magma from an underlying magma chamber. The removal of magma is due to explosive venting of lava and pyroclastic material.
The Bawl Mill
January 2016• "Like" if you're for corruption
• "Historic investment" statement has a few holes in it
Habits, Procedure, and Where Is The Gold?
In my early days of nugget hunting things were fairly simple. Just headphones, a pack, a detector and a small pick were all I needed for my search for great wealth.
Have We Hit 'Peak Gold'?
According to some experts, after the peak is reached, the production rate will slowly decline until it reaches near zero while the price shoots upward. At that point, we will have pretty much mined all the economic ore deposits that are present on the planet.
Critical Metals: Antimony
I’ve been taking a look at the mining and uses of a number of critical metals in series of articles, and it’s time to take a look at antimony.
The Bawl Mill
• He's got a real ball and chain...
• Knee-deep...
• Win a .357 Smith & Wesson?
Revised Dredge Regulations Published for California—Pure Garbage
We can’t say it wasn’t expected. The California Department of Fish & Game released revised suction gold dredging regulations on February 17, 2012, and it’s obvious the agency wants to make life as difficult as possible for dredgers.
Legislation Would Require Palladium Coin
Pending legislation requiring the government to mint a $20 coin with palladium mined domestically would put Montana front and center.
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The Bawl Mill
• Our Readers Say
• California Wilderness Coalition and The Nature Conservancy Recruit Government Employees to Carry Out Huge Land Grab
• Drywashing Rules Clarified
• The Keystone Gold-Copper District, Medicine Bow Mountains, Southeastern Wyoming
• Picks & Pans: Mining Tungsten Ore—A Case History
• Gold in Oregon
• Aussie Gold—A Look at the Northern Territory
• The Phoenix Gold Mine: A Brief History
• Calico Mine
• Mining Stock Quotes and Mineral & Metal Prices
• Looking Back
• Melman on Gold & Silver
