One in-house worker and one contractor had shown symptoms and tested positive.

The world's top copper miner maintains operational continuity at its mines.

First Majestic will adopt new processing technology at the San Dimas mine.

The company suspended operation at its San Cristobal mine in Bolivia and its Ambatovy nickel mine in Madagascar.

Eramet had already put the project on hold in February, citing economic and regulatory instability in the country.

A 2018 preliminary economic study showed the project could support 29 years of open pit production at 40,000 tonnes per day.

The company produced 2,983,349 ounces of silver in the first quarter, and 57,238 ounces of gold.

All of the company’s US mines continue to operate at full capacity.