All Articles
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.
SB 838 and the Future of Mining in Oregon
The verbage is SB 838 is vague and ambiguous to say the least. As a result, there is quite a bit of misinformation floating around the rumor mills.
The Bawl Mill
• Drug smuggling tunnels filled with environmental delays and red tape
• Did we make the list?
• A whopper of an error
Natural Gold Alloys
Natural gold is never 100% pure; all natural nuggets contain at least some impurities. We're going to take a look at just what some of those impurities might be.
MMAC & PLP Update
Keep in mind there are specific steps that must be taken to get your traditional mining district organized if it has fallen into disarray.
Melman on Gold & Silver
The question of relentless government payouts continues to haunt the political system.
Legislative Update
Robert Sanregret—Attorney at Law
Western Mining Council
National Association of Mining Districts
Prospecting and Mining Old Mine Sites
In some places valuable ores can be found within the waste material of mine dumps, sorted ore piles, and detrital vein matter at the surface. Though many of these old mine sites can be an excellent source of gold, not all are created equal.
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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
