A mudslide at the Yauricocha underground mine in Peru has killed three workers, Sierra Metals said.
Yauricocha is located in the Yauyos province in western central Peru
Plant will produce 62% iron ore fines concentrate
Peru operation's plant will be upping throughput by 20%
Sierra Metals restarts silver operation in Mexico.
Peruvian government has extended the national COVID-19 emergency, but some mining can restart.