RPT-Strike like it's 2011? Low copper prices loom large over wage talks
April 20, 2015 at 07:00 AM EDT
SANTIAGO, April 20 (Reuters) - When Antofagasta Chief Executive Diego Hernandez took the stage at the world's biggest copper conference last week, he talked about the growing risks mining companies face from rising worker salaries in South America due to staff shortages and strong unions.