Small Mining Operations
A Test Grid Dredged for Gold Values
June 2018 by Bill Bohan
The evaluation must also consider the gold fineness or purity. The purity of the Sugardaddy nuggets is estimated at 850 fineness, meaning 85% is gold (Au), 12% is silver (Ag) with 3% being other gangue alloyed metal.
Proper Placer Sample Processing
...your sampling procedures should not be designed to catch gold your mining technique will never recover.
Underground in the Original 16-1 Mine
These days they employ the use of metal detectors and carefully scan the shattered rocks, hoping to hear that sound we detectorists love to hear.
Shaker Tables for Processing Hard Rock Ores
Most placer equipment is really made with gold in the 30 and larger mesh sizes in mind, though if carefully used can often get reasonable recovery down to the 50 mesh size.
Guinea Africa: Gold, Ebola, and a Monkey Barbecue
With great relief, the equipment I chose worked well, and after shoving into three days what should have been ten days of set-up and testing, we were up and running.
Bering Sea Gold—Part II
In last month’s issue we covered the initial discovery of gold, the subsequent gold rush that occurred around Nome, some of the geology of the area and past production. We’ll conclude the article in this issue with a further examination of the geology and deposit types, discuss the resources...
Ask the Experts
Setting up a gravity dredge
Prospecting Hard Rock
We panned out maybe three gold pans of the material and we were shocked at the gold that was there. This rock appeared to be rich.
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The Bawl Mill
• Legislative and Regulatory Update
• Ask The Experts - Are there different “ferro” products processed out of the ore?
• Ask The Experts - How hot does a furnace need to be to get rid of sulphides?
• Ask The Experts - Will this paystreak be downriver off the trailing edge of bedrock?
• Putting Together A Small Free Gold Mill—Part II
• Chasing Float Gold—The Starry Night Wash
• 2018 National Mining Hall of Fame Inductees
• Michigan House Votes to Give Mining Operations More Flexibility
• Mineral Exploration On The Rise
• 18 Acquitted in Massive Brussels Diamond Heist
• Captain Obvious Strikes Again
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
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PLP Update
• California to Allow Suction Dredging in 2019?
