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
Schramm Inc. Schramm Inc. Schramm, Inc. is a manufacturer of drilling equipment and truck mounted drilling rigs headquartered in Chester County, Pennsylvania. The company was founded in 1900 by Chris Schramm. In 2010, Schramm, Inc. assisted in the rescue of 33 miners trapped for 69 days as a result of the Copiapó mining accident in Chile. The company built both drilling rigs that were key in saving the miners. The Schramm T685 WS truck mounted drill bored a hole that, on 22 August 2010, was the first to break through to the 33 trapped men, confirming they had survived the accident. The