Codelco sweetens offer to avoid strike at Chuquicamata mine

Chilean State-run miner Codelco, the world's largest copper producer, presented workers from three unions with a sweetened contract offer late Wednesday, hoping to avert a strike at the century-old Chuquicamata, union leaders told Reuters.

Codelco entered government mediation with the unions last week after they rejected the previous offer. The company's latest proposal includes a slightly higher signing bonus than previous offers, union officials said, though details were not immediately available.