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Finding Diamond Deposits With Your PC—Part I
April 2009 by W. Dan Hausel
One method used to explore for kimberlite pipes is aerial photographs. If a kimberlite can be found on aerial photography, there are likely more nearby that can’t be seen on photographs. Over the years, myself and others found several hundred...
Platinum Placers and Nuggets
Sometimes a placer miner will find small bits and nuggets of metal associated with gold and other heavy minerals in his concentrates, which exhibits a silver-gray color rather than the normal tones of gold.
Small Mine Selective Blasting
Drill holes in a mineralized vein often penetrate hidden layers of poor ore which, after blasting, end up diluting the production quality. Disseminated gold ores carrying two ounces per ton may be identical in appearance to adjacent vein material...
Hardrock Mining Accidents Claim Four Lives
Hardrock mining in the US has been hit by a tragic streak of mining accidents in recent months.
The Basics of Exploration Leases and Contracts—Part I
Let’s take a look at these important property aspects individually, because they all affect the value of a property and how much mining companies might or might not be interested acquiring it.
Mining Ends in Leadville
An era ended in Leadville February 4, when the last miners left the Black Cloud mine and hung up their brass tags for the last time.
Feds Deny Lease Renewals for Minnesota Mine
Two longstanding mineral rights leases that are critical for a proposed large underground copper-nickel mine upstream from the Boundary Waters Canoe Area Wilderness in northeastern Minnesota will not be renewed, two federal agencies announced…
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