Resurrecting an Old Hard Rock Mine—Setting Up the Millsite
June 2020 by Ron Kliewer
One of the first things we did while looking at buying the equipment was figuring out how it would dovetail into the milling process we already had in mind.
Some ores—mostly those with a high free gold content—are very amenable to gravity concentration. Well oxidized ores containing coarse gold are usually best for non-cyanide processes. Ores with significant sulfide content may require the...
Fortunately, there are products on the market that can address these problems and make a small-scale mining operation feasible.
Options for affordable crushers for small mining operations
Most gold-bearing veins in this region are controlled by fractures associated with the Melones Fault, a late Cretaceous structure that is 108 to 127 million years old.
The non-toxic thiosulfate is actually the medical antidote given to people for cyanide poisoning. By accomplishing both neutralization and metals recovery, this process creates an economic and environmentally attractive process.
With the exception of well-established operators with proven reserves and years of field experience, the high price of gold brought a flood of speculators, con men, and real estate brokers into the mix who were not previously engaged in the gold mining market.
All these decisions and more depend on the richness of a claim—something that is determined by sampling. But sampling isn’t cheap, and even collecting the samples can be more difficult than it appears on the surface.
The Bawl Mill • Our Readers Say Re: It's Time to Get the Heck Out of China • Ask The Experts - What’s the status of suction gold dredge permitting in California? • Ask The Experts - How do I properly and safely dispose of blasting caps? • Ask The Experts - How much silver per ton does it take to make a mine profitable? • Ask The Experts - How clean do my gold concentrates need to be to pour a gold button or bar? • Ask The Experts - What is the name and model of the old jaw crusher pictured in last month’s issue? • Dredging Tips and Tricks: T-80 Air Compressor Maintenance • Hard Rock 101: Mechanical Techniques • Clearing the Nugget Trap with a Detector • Desert Prospecting Yields More Than Just Gold • Memories of Shirttail Creek, Northern California • Indictments Pile Up for Gold Traders • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices