Ask the Experts
August 2007 by StaffQ: Does anyone know of an electrowinning instrument that will plate (heavy plate) rhodium and iridium? I have both in solution. (Solution content = 262.9 oz/ton of iridium; 14.9 oz/ton rhodium.)
If I have precious metals in solution in bulk, say 620 to 1,000 gallons, is there a facility to extract the precious metals out? If so, can each be isolated?
While many prospecting or mining operations don’t have sufficient profits to benefit from accelerated write-offs or even the full 100% “bonus” depreciation write-off, other options can be equally rewarding.
The old report I read indicated all they ever did was dig some trenches and take samples. It sounded to me like a good place to take my metal detector...
After picking up a large grey rock, ready to discard it, I immediately noted it was extremely heavy. My eyes started getting bigger and bigger as I wiped off the surface dirt and moistened it—the color yellow started showing.
Six sticks of dynamite had been found in the glove compartment of an abandoned car back in 1972. This started an investigation by every level of law enforcement, including the federal government, in the Silver City, New Mexico area.
• Can I get advice on a hard rock property in Calaveras County, California?
We are both very experienced working this type of ground, and we quickly found the pay layer where we would focus our efforts. The bedrock has good gold, but so does the red hard pan.
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.
The Bawl Mill • The Basics of Small-Scale Heap Leaching with Cyanide • Will California Dredging Survive? • Prospecting For Gold—The Osborne/Herman Hardrock Mine • Journeys in the Kingman Quadrangle • From Spanish Mine to Modern-Day Exploration: The Historic Gold-Silver Camp of Palmarejo • Spanish Police Seize Ship in Treasure Fight • Looking Back • Gold Mine Proposed in Jefferson County • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices