Ask the Experts
June 2014 by Chris Ralph• Building a jaw crusher
Q: I am looking for a “trommel machine” that doesn’t separate anything but clay slurry from rock hard clay.
Sulfides and oxides—what's the difference between the two?
Ore testing and other advice for starting up a mining operation.
Q: Can a voltmeter be used to determine the type of metal/mineral present in soil?
Q: I live near the Gold Basin area of Arizona. What detector will go deep and be easier to use for small gold? I need some help.
• Real or fool's gold?
The Bawl Mill • Ask the Experts • Ask the Experts • Ask the Experts • Ask the Experts • Ask the Experts • Finding Gold with a VLF Detector—Part III • Silver and Base Metal Deposits of the Pioche District • California Dredgers: A Step Closer to Getting Back in the Water • Arizona's Youngest...and Oldest Prospector • Exploring Placers with Auger Drills • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices • Correction • Crushing Quartz in Calaveras County: A Placer Miner Learns New Tricks