Large Scale Mining
The Robinson Mine—Big Things Happen Here
January 2013 by Bill Rich
When I’m traveling through the West, I sometimes take detours that lead me to places that I never knew existExploration Rush at Tonopah, Nevada
A few months later, a young, greenhorn lawyer agreed to pay to have it assayed, and the quartz turned out to be rich in both gold and silver.
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.
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.
Legislative and Regulatory Update
- NEPA comments due
- Update on latest US Supreme Court suction gold dredging appeal
- Washington State tries to restrict suction gold dredging
The “Chuck It Out” Nugget
This was no ordinary nugget. It had not traveled very far from its nearby source, and that did mean a lot, as we were searching for the source of several such nuggets found during a gold rush that occurred in 1859.
The ABCs of XRF
Fast forward to present day and the XRF has come of age. Pull the trigger on the hand-held device and you get a nearly instant assay of the surface of a rock.
China Closing More Than 1,000 Mines
It was only a few years ago that China was taxing and limiting quantities of exports for rare earths in an effort squeeze the market, drive up prices and extract the most in the way of income.
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• Green Valley Reconnaissance
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