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?
...Judge Ochoa ordered the parties to participate in mandatory settlement hearings starting June 24, 2014.
Fortunately, there are products on the market that can address these problems and make a small-scale mining operation feasible.
Common thought is the switchback slows the velocity of the rushing water and gold drops out from the cut bank to a fill gravel bar within or below the switchback. I am not going to disregard that model; however, I hope to improve upon it.
At first, I tried to shift things around, but then a hand with a rock would appear, so I would stop trying to adjust my gear and grab the rock to keep things moving.
I pulled out the nuggets I had worked on previously and looked at the size of the wire basket that the items to be cleaned are placed into. It looks much like a miniature french fry deep fryer.
…it was immediately evident the previous owner had not been using a detector. During just a few months of working the dumps part-time, he recovered gold in quartz specimens valued in excess of $40,000.
…let’s dive in and take a closer look at these rich gold and silver-bearing minerals to find out what they are, where they form, and how to identify them.
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