In the gold-mining process, the precious metal is often extracted from low-grade ore in a technique known as gold cyanidation. As its name suggests, the process utilizes highly-poisonous cyanide, some ...

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 ...

Toxic sodium cyanide has been used in gold mining since 1887, and it remains the primary reagent in use for gold processing today because it allows for efficient extraction of gold from low-grade ore.

Dear EarthTalk: Most gold mining operations use cyanide to extract gold from surrounding rock. What are the environmental implications of this, and are there alternatives? --J. Pelton, via e-mail ...

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Researchers from ESPOL and Ghent University have evaluated two methods for treating highly contaminated wastewater mining effluents generated during gold cyanidation in the mining industry: a ...

Even though the Colorado Supreme Court last week rejected Summit County’s ban on cyanide-based gold mining, no one is expecting a rush of mining applications any time soon. “I think the chances are ...

In mining, cyanide spills can cause fish kills and other problems, most recently at a river in Ghana last week downstream from a gold mine. While cyanide in mining is nothing new, using heap leaching ...

In the Philippines, as in many places across the globe, mercury has long been central to how small-scale gold miners earn their living. Used as an easy way to separate gold from other minerals they ...