There are multiple extraction methods for gold, but the one used most frequently in Thailand is gold cyanidation. This process involves soaking ore in cyanide until the gold is leached out, this cyanide is then stored in tailing ponds which can often leak into soil and nearby water systems. This toxic process incurs environmental and health risks that affect the communities surrounding the mine sites.
http://cieethailand.blogspot.com/2012/05/commodity-fetishism-cyanide-and-gold.html
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