Extracting gold from ore is a poisonous business. The most common method is cyanide leaching, where cyanide salts in solution are used to suck the gold out from its ore. You get gold, but you also get ...

Add Yahoo as a preferred source to see more of our stories on Google. Piles of waste left over from decades of mining surround the town of Leadville, Colorado. Now, the Denver Post reports that a ...

Since the modern gold rushes of the 1970s and 1980s, gold has been one of Australia's major exports. Australia is the second-largest gold producer globally behind China and holds the second largest ...

A groundbreaking new technology for gold extraction from cyanide processes is revolutionizing the mining industry by significantly boosting precious metal recovery rates through the recycling of this ...

Getting your Trinity Audio player ready... A company that wants to extract gold from piles of decades-old mining waste outside Leadville no longer plans to use cyanide in its processes after hearing ...

Getting your Trinity Audio player ready... LEADVILLE — Millions of tons of waste from decades-old mining operations sit in the hills east of town. The brown and orange piles of abandoned ore rise 30 ...

BOISE, Idaho (AP) -- A company wants to use cyanide as part of gold mining in the Boise River watershed, the second application in 2004 for a mining permit to extract gold from land above the capital.

While cyanide in mining is nothing new, using heap leaching to process gold didn't come along until the 1970s, McCullough said, when the first such mine was opened in Nevada. The process opened up the ...