Unions at Antofagasta's Centinela threaten strike after negotiations fail
Unions at Antofagasta's Centinela threaten strike after negotiations fail SANTIAGO, Sept 23 (Reuters) - Unions representing workers at Antofagasta Minerals' ANTO.L Centinela mine in Chile called a strike vote on Wednesday, saying negotiations with the firm had reached an impasse.
(Reporting by Fabian Cambero; Editing by Iñigo Alexander)