Large Scale Mining
Drilling for Ore
August 2014 by Bill Rich
In the simplest sense, drills can be divided by their mode of action—percussion, rotary or a mixture of the two.
The Giant King Mine
Most gold-bearing veins in this region are controlled by fractures associated with the Melones Fault, a late Cretaceous structure that is 108 to 127 million years old.
The Seven Troughs Mining District
The favorable geology of the northeastern and central parts of the Seven Troughs Range are the parts most interesting to prospectors. They are underlain by a thick sequence of Tertiary volcanic rocks, mostly rhyolites and andesites.
Gold and Silver Deposit May Be World's Largest
A crater in an undersea volcano off Japan may contain the world's largest gold nugget ever found...
The Importance Of Mining Critical Minerals In The USA
Critical minerals are products that the government has designated as critical to our national interest because of both their potential military and industrial applications.
Time to Come Home
The need to bring mining back to North America is more urgent than ever.
Making A Big Discovery
We sent them a lot of information, including my presentation about the area and its potential. We were excited to learn a couple weeks later that the company was interested in the property.
Large Gold Deposit Types
It is not necessary to have a PhD in geology, but you need to know the basics, so that’s what I am going to try to dig into here—the understandable basics of these gigantic gold deposits.
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