Officials from state company Enami met with authorities and company representatives in China last month to discuss a $1.4 billion project to overhaul Enami’s smelter.

The world's largest miner of the metal has struggled with operational issues and high debt.

The miner plans to replace its entire fossil diesel consumption with renewable diesel at its operation in Utah from 2024.

Evolution agreed to buy the stake for $400 million in cash and a copper price-linked contingent consideration of up to $75 million.

The latest attack at Poderosa has highlighted a growing risk for miners in the Andean nation.

The Bucko Lake mine operated from 2009 to 2012.

Kaizen's main asset is the Pinaya copper-gold project in southeastern Peru.