BNamreicas reported that Peru's largest mining union FNTMMSP reportedly announced it will go on strike May 12 to demand better pay and participation in profits. The union said the strike would last for an undetermined period of time.

According to local press reports, another union, the CGTP which represents workers from several sectors including mining said that it was also participating in the strike.

The workers belonging to the FNTMMSP are present at operations owned by Southern Copper, Buenaventura, Xstrata's Tintaya mine, Cerro Verde, Shougang Hierro Perú and several others.