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.
How to Refine Silver—Pt I
Silver refining has been used from ancient times to change the characteristics of the metal. Early metallurgists refined silver by heating it a couple hundred degrees above its melting point and holding the metal at an elevated temperature for a period of time.
Stamp Mills
Stamp mills were a proven method of proccessing in early mining.
Mining Returns to Historic Comstock
Mining has returned to Nevada’s historic Comstock more than 150 years after the discovery of one of the world’s richest silver veins touched off a frenzy that drew thousands of people west. But unlike the hard rock miners in the 1800s, the modern day operation involves huge trucks...
Care and Lubrication of a Model 13 Laboratory Wilfley Table
A Wilfley table works best when all of the mineral being run across it (the pulp) is about the same size. For this reason, I took a good look at each of the samples.
All About Lead Minerals, Silver and Gold
Many miners know that lead is very commonly associated with silver values, but the truth is that it is also associated with gold values in many locations as well.
Silver Bull Resources Sees Bright Future for Silver & Zinc
The Sierra Mojada Project lies within a historic high grade silver, lead and zinc mining district originally discovered in 1879.
Underground Mining: Stoping Methods
In an old mine that does not have stopes, you know the old miners did not take much if any ore out of that excavation. On the other hand, if you see large stopes within the mine you know that it is these places where the miners found profitable ore deposits within the vein.
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