The upgrade is expected to increase average annual gold production at the Ghana mine by between 75,000 and 100,000 ounces for the first five years, starting in 2020.
The subsidiary of Russia’s state nuclear company Rosatom may buy up to a 51% interest in Atacama lithium project, located in an area that hosts more than 15% of the world’s known reserves of the battery metal.
The Ventanas smelter has been the target of criticism from social and environmental groups that accuse it of contributing to heavy pollution in the Quintero area.