Supervisors at BHP's Escondida mine in Chile to strike after contract talks fail

SANTIAGO, Oct 13 (Reuters) — The supervisors' union at the world's largest copper deposit, BHP's Escondida mine in Chile, said on Tuesday that mediation efforts to tie up a new collective labor contract had failed. The union's members are set to kick off a strike on Wednesday, the union added. The threat of a shutdown at the mine has been supporting global copper prices amid fears of tighter supply. (Reporting by Fabian Cambero; Editing by Natalia Siniawski) ((mailto:Kylie.Madry@thomsonreuters.com;)