How do mines and refiners deal with doré bars?
It is this ability to hear and respond to the faintest of audio signals that I believe separates the best nugget hunters from everyone else.
Fascinated by the sapphires—and the gold that occured with them—he was soon buying parcels of property and setting up his own commercial-scale gravel processing plants.
The very first thing to find out...is if the detector has the ability to be ground balanced.
Breaking cemented gravels
I frequently get asked, "What should I look for when I am out prospecting that will tell me there are good amounts of gold present in the ground?"
Kimberlite is very difficult for geologists to find, let alone prospectors and rock hounds. This is because kimberlite is rarely exposed on the surface and few people know how to identify the rock.
Ore testing and other advice for starting up a mining operation.
...your sampling procedures should not be designed to catch gold your mining technique will never recover.
...if you have a good, rich spot, hand-operated systems can produce some decent gold.
The problems of the submersible dredge tube are addressed by the subsurface dredge, where the enclosed sluice recovery tube is suspended from a flotation assembly...
Because these crevices catch and hold gold so well, it's worthwhile to learn how they form, which ones are good for catching gold and which ones are not.
The zone of influence of each sample must be carefully considered when deciding how far sample sites should be spaced from each other.
When you approach a location, even if you've been there before, you should consider all the factors and conditions present at the site. This includes both natural and man-made factors.