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 ...

The patent-protected flowsheet uses the same front-end as traditional cyanidation-based processing, but where cyanidation oxidises the gold to make gold cyanide, the Cycladex process leaches gold from ...

Refractory gold ores present significant challenges to conventional extraction methods. In these ores, gold is tightly encapsulated within sulphide minerals or locked by carbonaceous matter, thereby ...

MANILA, Philippines - The Mines and Geosciences Bureau (MGB) has initiated a research on the use of a type of bacteria to promote bioleaching of refractory gold ore. A refractory gold ore is naturally ...

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Romania’s Prime Minister, Mihai Tudose, recently raised the prospect of reopening the country’s huge Rosia Montana goldfield. The area had been mined from Roman times until the last state-run ...

Sawarda — The residents of Sawarda and neighbouring villages in Sudan's Northern State have welcomed the decision of the state government on Sunday to close a gold cyanidation plant in the area. For ...