All About Hard Rock Drills

July 2021 by John Norman

There are three basic power sources for rock drills—electricity, gasoline and compressed air. Before we go into big pneumatic drills, we’ll start with a quick rundown of each.

Gold Recovery with Centrifugal Bowls

July 2014
Centrifugal bowls are very efficient, and with proper operation they can consistently achieve gold recoveries above 95% with gold of about 50 mesh size.

Gold in Tertiary Gravels

November 2015
In some places, semi-continuous sections of riverbed can easily be linked in many places to identify the path of the ancient rivers.

Underground Mining: Getting the Ore Out

February 2017
Choosing the right method to move your ore and waste is all about making the right choices. Sometimes more than one method may be used during the life of a mine as an operation expands and grows.

How to Turn Your Gold Finds Into Cash

March 2020

Even if you are not ready to cash in right now, it might be good to evaluate your options and make a plan of action so when that day comes you know exactly what to do.

Crystallized Gold Mines of California

February 2022

Gold specimens that include visible crystal formations are among the rarest, most attractive and most valuable forms of gold to be found.

Gold in Quartz

February 2016
Because quartz and gold may be deposited together across a considerable range of temperatures, not all quartz veins are the same, and there are several different types of gold-quartz deposits.

Reality of the Klondike

January 2012
I saw gold this summer. The kind of gold that I haven’t seen since ‘81. The kind of gold that rattles in the pan. The kind of gold that would start a stampede—even in 1898.

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