Zaldívar produced more than 100,000 tonnes of copper last year.

The Alto Pará property covers an area of 70,498 ha of land and is located near Itaupu, the second largest hydro-electric dam in the world.

Deal gives Eldorado full ownership of the Lamaque project near Val-d'Or, Quebec, which is expected to produce 123,000 ounces of gold at all-in sustaining costs of US$634 per ounce over 10 years.

The Canadian miner said it will take “all legal steps possible” after the country’s Supreme Court suspended the mining licence for its flagship Escobal silver mine.

The company may be able to begin developing the potential open-pit Century project in Ontario by 2023.

Workers at Zaldivar are set to vote on a strike this week, while supervisors at Centinela mine have already decided it, but expect a government mediation mechanism to extend negotiations for at least five more days.

It also said that a Brazilian court had granted it and its partner Vale a four-month extension to negotiate a settlement to a $47 billion claim stemming from the 2015 mine disaster.

Escondida, majority owned and operated by BHP, produced 97,103 tonnes of copper between January and March, down from 265,597 tonnes a year earlier.