Small Mining Operations
Gold in Guyana—Part II: Process Optimization at Sacre Coeur Minerals' Lower Puruni Alluvial Mining Project
August 2012 by Carl Brink
In Part Two of my two-part series I describe the mechanized alluvial gold mining operation on the lower Puruni River launched by Sacre Coeur Minerals in 2011.
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.
The Fire Assay of Carbon
Carbon, activated charcoal, or “char,” as some old timers refer to it, can be an assayer’s nightmare.
Resurrecting An Old Hard Rock Mine—Gold At Last!
We’ve been busy with a plethora of projects, all aimed at gathering gold into a pile big enough to brag about. We’re not there yet, but I’ll show you some of the interesting projects we’ve completed since we talked last.
Commercial Blaster Training
Since last year’s articles on explosives for mining, several people have asked for more information about becoming a licensed blaster.
PLP and MMAC Update
Sampling for Success—Part II
The first and most important thing of the sampling process is to try to be as unbiased as possible. There is a natural tendency to select rock that looks the best—even unconsciously.
The Highs and Lows of Drywashing
We were met with a plethora of mechanical problems with the dry washer and even a few with the excavator that were at times frustrating, but we were in this for the long haul, so we needed to solve these problems and move forward.
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