Ask the Experts
December 2013 by Chris RalphOre testing and other advice for starting up a mining operation.
I’d start the day by crawling out of my dome tent, cooking up some Spam and eggs, and heating water for instant coffee on the Coleman stove.
I knew the nuggets got into the nugget patch somehow, I just had to figure out how and from what direction they came.
With eight loads processed, a pumpkin-size rock fell into the hopper, stopping the whole operation until I could lift it out.
After he excavates the ore down to bedrock, he goes over the bedrock with a metal detector to ensure he didn't leave any gold behind before he backfills the area.
A Wilfley table works best when all of the mineral being run across it (the pulp) is about the same size. For this reason, I took a good look at each of the samples.
I thought it might be worthwhile to take a look at the basics of this important mineral separation technique and how a miner can use it to recover the values out of an ore.
I researched the Internet and found a number of table makers, but technology has changed in the last 25 years. No one could sell me a kit for a new deck with wooden riffles...
The Bawl Mill • Ask the Experts • Ask the Experts • Sierra County Gold—Part I • ICMJ's Annual Index • Ophir—Possibly the Best Kept Secret in Alaska—Part II • Hunting for Hardrock: The Basics • Gold in the San Francisco District Oatman, Mohave County, Arizona • Heavy Glacial Rocks and Gold in the Midwest • Strategic Metals—Part II • The Amazing Mineral Tourmaline • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices