Five miners perished in a collapsed shaft at Chile's El Teniente copper mine, the world's largest underground mine. The miners were trapped after a 4.2 magnitude earthquake on Thursday. Rescue teams located the bodies after drilling through rock. Authorities are investigating the cause of the collapse and whether safety regulations were violated. The incident prompted a halt to operations and the evacuation of 3,000 workers. This tragedy follows a similar, albeit ultimately successful, rescue operation in 2010.

Prepared by Rachel Morgan and reviewed by editorial team.