The Bawl Mill

August 1999 by Kenneth Harn

Ask The Experts: Nickel assays

March 2017

Q: Our group has found a nickel deposit in the Yuma, Arizona area that is similar to the one that you wrote about...

Michigan DEQ Approves Upper Peninsula Mine

January 2008
The Michigan Department of Environmental Quality approved permits allowing Kennecott Minerals, a subsidiary of Rio Tinto, to operate a nickel and copper mine in the Upper Peninsula.

Bedrock

March 2014
I am going to break bedrock down a bit and explain my view of the varying scenarios I come across in the field.

Fire Agate in Arizona

June 2002
Agate, a banded form of chalcedony (cryptocrystalline quartz), has been used as a gemstone for over 7,000 years. Romans cut and polished agate, and this practice was taken to new heights in Germany in the 16th century.

Border Silver

January 2003
There is a sizable area that straddles the U.S.-Mexico border where native silver occurs in shear zones at relatively shallow depths. The district is in the low but rugged Pajarito Mountains, the highest point of which is 5,838 feet at Cerro Ruido, on the Mexican side. The deceptively rough terrain forced the first border surveyors, in 1855, to kill several mules and horses because of their injuries.

Ask The Experts

September 2015
Can the public take minerals from a mining claim?

Ask The Experts - Can a detonation help determine the size and location of basalt?

December 2018

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