Underground Mining: Stoping Methods
October 2016 by Chris RalphIn 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.
There are a few questions you will need to ask yourself before you apply for a suction dredge permit from the State Water Resources Control Board.
There are times when being able to recognize a type of rock can make you a much more successful prospector.
So you think you have an ore deposit? The work has been long and hard, but there are a few drill holes, lots of samples and assays. The data is in a reliable computer and there may be a mine at the end of the tunnel. What is the likelihood of a profitable operation? Can you raise capital for development or exploration?
Present conflicts and realizations having to do with dependence on China have illuminated the fact that suction dredge miners have a vital role to play and are an ignored and untapped domestic resource—until now.
It was time to prime the pump and start the engine! Dan’s priming method is to use a small, submersible, 12-volt pump. My priming method is to use a hand-operated diaphragm pump.
Since we know that the secret to breaking rock is applying force from the inside out (putting tension on the rock), we will be looking at ways we can generate force using human and machine power.
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.
The Bawl Mill • Ask The Experts: Should I remove someone else’s claim post from my claim? • Ask The Experts: Question about resolving a quitclaim error • A New Prospecting Spot • MMAC & PLP Update • Digging It Dry • Alternative Financing Alternatives • Dredging Therapy • Moving The Big Rocks • Modesto, California Man Finds 18-Ounce Nugget • New ICMJ Website Almost Here • California State & National Gold Panning Championships • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices