Company Notes

April 1999 by Staff

Ask The Experts - Need assaying advice

September 2018

Mineralized Calderas in Colorado

May 2002
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.

Greenstone Belts in Minnesota

August 2005
Greenstone is a dark greenish-black basaltic rock which, along with chloritized schist, forms belts up to 50 miles wide in northern Minnesota, in rocks of Late Archean age. Most belts are 2.6 to 2.9 billion years old.

Oregon Miners Take DEQ to Court, Again

January 2011
Since 2005, a group representing a handful of Oregon and Washington mining organizations, centered around the Eastern Oregon Mining Association (EOMA) and the Waldo Mining District (WMD), have been actively fighting the Oregon Department of Environmental Quality (DEQ) over their then new “700PM Suction Dredge Mining Permit.”

Melman on Gold & Silver

October 2017

As noted above, the “Ring of Fire” is an area of great potential mineral wealth located in the far northern Ontario Province of Canada. Many companies have sent in exploration and development teams…

Alternative Gold Leaching Methods

January 2014
The ideal leaching chemical would leave behind what we don't want or need in the ore and take only the valuable metals.

The Bawl Mill

September 2009
• Feeding the addiction...
• Running on empty...
• Boxer may go down with the count

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