Rescuers have recovered the bodies of four miners and are searching for two more after an earthquake caused a partial collapse at El Teniente mine last week.

One of five miners trapped after a collapse at the world's largest underground copper mine has been found dead, Chile's state-owned Codelco mining group says, with the company's vice president of human resources telling the media "we will keep putting our full energy into the rescue efforts" for the four workers still missing.

Officials say that a worker was killed and five others remain trapped underground after a collapse at a copper mine in Chile