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 ...

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 ...

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 ...

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... 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 ...

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 ...

At Flinders University, scientists have cracked a cleaner and greener way to extract gold—not just from ore, but also from our mounting piles of e-waste. By using a compound normally found in pool ...

Get any of our free daily email newsletters — news headlines, opinion, e-edition, obituaries and more. Evidence abounds across Montana of the ruinous environmental legacy of cyanide-based open-pit ...

The study by the National Academies of Sciences, Engineering and Medicine found the state’s regulatory framework for gold mining was inadequate. Simonds has said her House Bill 85, which would ban the ...