![](https://www.mining.com/wp-content/uploads/2017/07/zaldivar-mine-antofagasta.jpg)
Antofagasta faces strike threats at two of its copper mines in Chile
Workers at Zaldivar are set to vote on a strike this week, while supervisors at Centinela mine have already decided it, but expect a government mediation mechanism to extend negotiations for at least five more days.