By Cecilia Jamasmie The twelve key talks coming up in Chile that will keep copper enthusiasts on their toes. (Data: Chile’s Gov’t. | Graph: MINING.com.) Copper forecasters are keeping a close eye on Chile these days, as the top-producing country prepares for another busy six months of labour talks. From the 32 contracts set to expire in 2018 at the country’s mines, there are still a dozen to be negotiated before year-end. Much of the attention will remain on BHP’s Escondida copper mine, the world’s largest, where a 30-month contract expires at the end of July.