![](https://www.mining.com/wp-content/uploads/2018/10/worlds-top-copper-producer-faces-lengthy-smelter-halt-at-major-mine.jpg)
World’s top copper producer faces lengthy smelter halt at major mine
Chile's Codelco is in the midst of upgrading its smelter at Chuquicamata, its second largest operation by size, to comply with stricter emissions standards coming in effect in December.