"These people are also bringing technology
that’s not permitted and damages the environment," Chaparro said during
the joint interview. "They’re teaching Colombians to extract gold. It’s a
perverse and illegal knowledge transfer."
The mining frequently involves large dredges
that suck up mud from riverbeds, from which gold is extracted using
mercury and cyanide before the contaminated sediment is returned to the
river, Chaparro said.
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