2010 Copiapó mining accident San Jose Mine were around 20% higher than at other Chilean mines due to its poor safety record. The collapse occurred at 14:00 CLT on 5 August 2010. Access to the depths of the mine was by a long helical roadway. A group nearer the entrance escaped, but a second group of 33 men were trapped deep inside. A thick dust cloud caused by the rock fall blinded the miners for as much as six hours. Initially, the trapped miners tried to escape through ventilation shafts, but the ladders required by safety codes were missing. Luis Urzúa, the duty shift
2010 Copiapó mining accident a Pulitzer Prize-winning writer at the "Los Angeles Times". Tobar had exclusive access to the miners and in October 2014 published an official account titled "Deep Down Dark: The Untold Stories of 33 Men Buried in a Chilean Mine, and the Miracle That Set Them Free". Tobar described the previous books published on the topic as "quick and dirty" with "almost no cooperation from the miners." These books include "Trapped: How the World Rescued 33 Miners from 2,000 Feet Below the Chilean Desert" (August 2011) by Marc Aronson; "Buried Alive!: How 33 Miners Survived 69 Days Deep Under the Chilean