Small Mining Operations
Ask the Experts
August 2014 by Randy SmithCentrifugal bowls versus jigs
Resurrecting An Old Hard Rock Mine—Safety Is No Accident
Now it was time for the nerve-wracking part of the job: actually removing anything from the hanging wall we deemed to be in need of removal because it was either loose, could be loose, looked loose, or we felt it was just downright dangerous
A New Method for Handling Stubborn Gravity Middlings
The solution focused on the relative difference in malleability between gold and waste, rather than the difference in density exploited by gravity circuits.
All About Hard Rock Drills
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.
The Batteries Metal Rush
There is a major change coming in the economy of the world and now is the time for prospectors and miners to grab a ticket and get on board.
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.
Small-Scale Concentrating and Recovery Methods
The first step in my recovery process after milling the ore to the desired size is to table it. On this particular ore, I get good results milling it to minus 100 mesh.
Some Tips and Tricks for Dredgers: Determining Pulley Size and Belt Length
If Epd is larger, then the compressor will be spinning faster than the manufacturer’s maximum specified RPM and might destroy itself. If this happens, then the compressor again might not produce enough air to support a diver. Neither is a desired outcome.
Bawl Mill • Ask the Experts • Conductive Minerals and Your Metal Detector • A Model Mining Operation • BLM Raises Location and Claim Fees • I Finally Made It to Northern Nevada • Clarification on Oregon's SB838 • Drilling for Ore • Sniping for Drought Gold • Successful Rally for Suction Dredge Miners in Idaho • Over the Divide • Gold Ores of the Delamar District, Nevada • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices
News from the Editor • Legislative and Regulatory Update