The Ancient History of Gold
December 2002 by Edgar B. Heylmun, PhDMan was aware of the presence of gold over 7,000 years ago, and it probably did not take him long to find out that gold was malleable and resistant to corrosion. He no doubt learned, at an early date, that objects could be fashioned from gold.
Representative Jim Gibbons (R-Nevada) said he believes now is the time to address reform of mining law during a recent interview at the Northwest Mining Association (NWMA) convention in Spokane.
The Colorado Mining Association is asking the US Supreme Court to review a 2001 rule that largely barred new roads on 58 million acres of roadless areas in national forests.
A pediment is a broad, gently sloping erosion surface or plain of low relief that is often found in arid and semi-arid regions at the base of a receding mountain front. The example shown is from the Palo Verde Ranch 15-minute topographic quadrangle, southwest of Tucson, Arizona. This is one of the best examples the writer has ever seen.
Sulfides and oxides—what's the difference between the two?
Depending on the ore and if significant sulfides are present, a hard rock miner may be able to get away with simply using a flux to digest the other minerals that may be present.
Having spent 33 years prospecting off and on in this area, this writer has become very familiar with the region, its mines, the gold (hardrock and placer), wildlife, weather, topography, and history—it has been a friend to me.
I know big mining companies use cyanide and other leach systems to recover gold from ore. Is this the only economically feasible way to recover the values?
The Bawl Mill • Original Sixteen-to-One Mine Fights On • Solar-Powered Placer Sampling Equipment • Working the Belmont Mine—1953 (Part 3—Conclusion) • Company Notes • Picks & Pans: Gold and Bears • Gold in North Dakota • The North Star Mine • Dectecting Alaskan Gold Nuggets • Columbians Continue Search for Emeralds • Mining Stock Quotes and Mineral & Metal Prices • Melman on Gold & Silver