Large Scale Mining
Canadian Company Recovers 1,111-Carat Diamond
December 2015 by Scott Harn
It is the second largest gem-quality diamond in history, after the 3,106-carat “Cullinan Diamond” was recovered in South Africa in 1905.
The Wild Rush To Find More Cobalt—Part II
In this second part on cobalt, I will take a look at the various types of cobalt deposits and how you can prospect for them. Who knows—perhaps the next big cobalt strike will be yours.
Alaska to Target Rare-Earths
Alaska is in the midst of assessing its rare-earth resources, an effort pushed by Governor Sean Parnell, who sees them as another example of where the US is reliant on foreign sources to meet its needs.
The Struggle to Reopen Alaska's Largest Gold Mine
The historical AJ mine, located east of Juneau, Alaska, was considered the largest gold mine in the state at one time. Joe Juneau and Richard Harris struck gold there in 1880, and it has been more recently known as a tourist destination.
Carissa Gold Mine Comes Back to Life
The mine will be open for public tours Saturday and Sunday afternoons beginning August 24, lasting into the fall and winter as weather permits.
NWMA Show
Every year the Northwest Mining Association holds an industry trade show. Many vendors are on hand, and there are many presentations given. With thousands of folks in attendance it’s not hard to get a pulse on what is happening in the mining industry.
Modern Mining Reclamation
A study showed that between 1930 and 1980, only a quarter of one percent of the land in the United States was used in all mining applications combined, including surface mining, tailings disposal, underground mines, and all mineral processing facilities.
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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