How to Interpret Assay Values
January 2018 by Don Robinson
This assay system of ounces per ton sounds simple enough, but the use of the metric system and the additional measuring terms of “grams per ton” and “parts per million” (ppm) has created some misunderstanding of ore value.
Imagine you have located a source of virgin placer ore containing immense gold value. Now imagine that there is a 10-ton monolith of extremely hard gneiss in between you and payday.
Q: Can and should you remove their poles and notice right then and there or should you wait until you have convinced them of their trespass?
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.
In developing a mineral property or mining claims, one of the first goals is to identify and quantify valuable deposits. The classic method of doing this is by drilling holes into the ground to sample what is below the surface. The problem is that one or two holes usually are not going to tell you a whole lot...
South African gold miners are turning their anger towards Britain, charging that the sale of 25 tons of gold by the Bank of England has depressed gold prices and put them out of work.
• Making a noisy dredge more quiet
Since we know that the secret to breaking rock is applying force from the inside out (putting tension on the rock), we will be looking at ways we can generate force using human and machine power.
The Bawl Mill • Legislative and Regulatory Update • California: The Land of Big Nuggets—Part II • Bedrock Nugget Hunting: Tools of the Trade • A Primer on Bitcoin and Other Cryptocurrencies • Gold Hunting on Libby Creek • PLP and MMAC Update • Man's Best Friend • An Interview with Minelab Engineer Mark Lawrie • Third Largest Nugget in Existence Returns to Dallas • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices