Last week, Bloomberg.com reported:
Mexico’s copper output plunged 49 percent in January from a year earlier because of a strike at Grupo Mexico SAB’s Cananea mine, the nation’s largest producer.
This past Monday, they reported
Striking miners and other workers scuffled with rocks and sticks at Mexico’s largest copper mine, injuring nearly two dozen people, the mine’s owners and local media said Sunday.
Grupo Mexico SAB issued a statement urging government authorities to intervene after Saturday’s scuffle at the Cananea mine in the northwestern state of Sonora, where strikers tried to block other workers from entering the facility.
Copper is now at $3.90+ and still seems to be headed upwards.