About 20% of Chile’s largest copper mines closed or reconverted by 2025

[caption id="attachment_798921" align="aligncenter" width="600"] Codelco’s El Teniente mine, the world's largest underground copper mine, celebrates the first year of an open pit extension. Jan. 2014.[/caption] Close to 20% of Chile’s largest copper mines will be closed or reconverted by 2025,...