Hard Rock 101: Micro Blasting
July 2020 by John Norman
Micro blasting can be used to take down hanging rock, separate minerals from overburden, and collect gemstones and other high-value product with minimal damage.
“JP, is it possible to make a living looking for gold with a metal detector?” I get asked this question a lot...
Old tailing piles extend for miles. There was still plenty of water flowing here, so WPA members set up highbankers at several settling ponds.
Our research indicated this whole area had been claimed by Newmont mining company for several years, but when the price of gold dropped they let the claims expire, and we confirmed this with the local BLM office.
I made my way up past where I left off and the wash was going to end in about 100 feet. It was then I got a sweet signal.
Pumps can be set up quite a distance away horizontally from the sluice, even hundreds of feet. It will work so long as there is sufficient water at the source where the pump is located. Vertical distance is more of a problem than horizontal distance; 30 to 40 feet is the maximum vertical climb for most pumps.
All 28 groups listed agree that Section 402 of the Clean Water Act does not apply and no dredge miner should be asking a state or federal agency for such a permit.
...if you have a good, rich spot, hand-operated systems can produce some decent gold.
The Bawl Mill • Ask The Experts - Can GPR be used for lode prospecting? • Ask The Experts - How do I extract gold from pyrite? • Ask The Experts - Should I dig faint sounds with no indicator bars while detecting? • Ask The Experts - Should the detector sound on iron and nickel in a gold area? • Sluicing and Detecting Downstream • Tips and Tricks • Gold Prospecting for Better or Worse: Does Caliche Grow? • 10 Keys to Prospecting Like A Pro • Polymetallic Skarn Deposits • Practical Advice for Milling Hard Rock Ores • Speed Prospecting for Hard Rock Gold • Forrest Fenn Treasure Chest Finally Found? • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices