Throw-Away Gold: Back to Basics
February 2002 by T.D. LaRunePlacer mining, whether for profit or recreational purposes, involves separation of free gold from the gold-bearing sands (gangue) of alluvial deposits by methods using specific gravity. The free gold can vary from 17 to 19.3 in specific gravity terms, depending on the alloy mix, which is usually silver, but can be copper, lead, sulfur, tellurium, antimony, or mercury.
Hardrock mining is usually done on a large scale, and although a few small-scale hardrock operations still exist, it’s not an easy operation to start up and run profitably.
I like to think in terms of “conductive mass” because it is a combination of both the conductivity of the metal and the size of the target that determine how a detector sees conductivity.
Seldom, if ever, have we witnessed as much financial upheaval or as rapid a change in sentiment as we saw in the first two trading days of the year...
Most dry washers have a feed rate adjustment. It needs to be set so that the material flows evenly over the riffles and does not bury them.
The Bawl Mill • Federal and State Biologists Accused of Planting Evidence • Placer Gold in New Mexico • Mining Deaths Drop to New Low in 2001 • Prospecting for Meteorites with a Metal Detector • Aussie Gold—A Look at Victoria • The Rand of South Africa • Picks & Pans: Arizona Desert Drywashing Adventure • 2001 World Gold Panning Championships • Placer Gold Near Fairbanks, Alaska • The "Drumstick" • Company Notes • Editorial • Looking Back • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices