What Is Your Grade?
March 2021 by Thom Seal, PhD, PE
After paying for the mine fleet, mill capital, supplies, fuel, power and labor, at today’s metal prices, does this mine make a profit?
They… create negligible fumes and much less fly rock than blasting. Below are some tips on maximizing your effectiveness with these tools.
As a plaintiff in one of the lawsuits, I’m not allowed to talk about specifics in the court-ordered negotiations currently underway in San Bernardino. However, I do want to let you know we are making progress…
Please note that new mining claims filed on or after September 1, 2019, will be subject to the new fee schedule.
One of the issues that prospectors run into when working to upscale from micro-scale hard rock testing to a greater production output, is that they often confuse individual devices or machines with systems.
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.
Most prospectors understand placer mining a lot better than hard rock mining and don’t realize the amount of work that goes into processing different types of hard rock ore.
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.
The Bawl Mill • Ask The Experts - Info on Santa Cruz beach placers? • Ask The Experts - Detectors and flour gold • Ask The Experts - Why is the gold in these clays? • Ask The Experts - Can you explain colloidal gold? • Ask The Experts - Where did this kimberlite come from? • Ask The Experts - Can gold particles combine to form a nugget? • Placer Gold Deposits in the Western States • Evaluating Gold Recovery with Mass Balance Calculations • Clues for Detecting Ancient River Channels and Flats • State of Idaho Looks to Invest in Gold and Silver • Colorado Uranium Mining in the 1950s Boom • Drywashing for Desert Gold—Part II • Decoding Dredge Capacity • I Just Tripped Over A Nugget • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices