All 33 Miners Rescued, 2010 Copiapó Mining Accident, Chile

Search and rescue attempts
Ventilation shaft
Rescuers attempted to bypass the rockfall on the main entryway through alternative passages but each route was blocked by fallen rock or threatened by ongoing rock movement. A second collapse occurred at the stricken mine on 7 August when rescuers were trying to gain access via a ventilation shaft and they were forced to use heavy machinery. Out concern that additional attempts pursuing this route would cause further geological movement within the mine, attempts to reach the trapped miners through previously existing shafts were halted and other means to find them were sought.