La Granja, Peru's long-awaited copper prospect, got a new lease of life for exploration work as UK miner Rio Tinto extended the concession.
Shipments of aluminum oxides and refined copper wires to the bloc also performed well last year, official data shows.
Companies report production results from gold, silver, lead and zinc assets in Colombia, Mexico and Peru.
Meanwhile, the professionals' union at the Gabriela Mistral mine could vote for a strike.
Leagold Mining announces Los Filos expansion study
Newmont Mining's planned takeover of one of Latin America's biggest gold producer, Goldcorp, with assets in Chile, would create the world's largest gold miner, but received mixed reactions from analysts.