Ali says most big gold mines in Mongolia now use cyanide to extract gold, as do some artisanal miners. It’s less toxic than mercury, and it works better with those lower-grade deposits. But cyanide processing can still be harmful. So Belkhuu says he’s happy with the water process, which is safer and can still recover more than 80 percent of the gold from the ore.
read more... https://www.pri.org/stories/2017-11-03/these-mongolian-miners-are-making-gold-greener-now-they-want-their-government
No comments:
Post a Comment