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
Pabst Mine disaster from the wooden planks lining the mine walls and heated with the miners' carbide lamps. Soon after the collapse, a miner named Alfred Maki descended the shaft and heard signals from the men trapped inside. Over the next five days, rescuers began digging from the neighboring "H" shaft to try to reach the trapped miners. They descended first to nearly the bottom of "H" shaft, where a tunnel connected the two shafts, and then began working their way up the ladderway of "G" shaft. On the fifth day, they were able to reach the trapped miners. According to news reports,