Compañía Minera San Esteban Primera Compañía Minera San Esteban Primera Compañía Minera San Esteban Primera (San Esteban Primera Mining Company) is a Chilean mining company, dedicated to the production of copper and gold concentrates. San Esteban's headquarters are located in Providencia, Santiago Metropolitan Region. San Esteban also owns the San José Mine in Copiapó, Chile, where 33 miners were trapped underground for 69 days after a mining accident on August 5, 2010. Chile has a long tradition in mining, which developed during the 20th century and made the country the world's top producer of copper. Since 2000, an average of 34 people have died every
Ontario Mine Rescue to allow for a four-hour capability. The BG174 proved a workhorse for almost 40 years before it was replaced by the BG4. Ontario Mine Rescue took on added responsibility in 1984 after four miners were trapped and killed in a rockburst at Falconbridge No. 5 Shaft near Sudbury. The Stevenson Commission recommended that the organization's mandate be expanded to conduct training in and respond to non-fire emergencies. Training on non-fire rescue equipment began shortly after. In January 2001, responsibility for Ontario Mine Rescue was transferred to the Mines and Aggregates Safety and Health Association, now a part of Workplace Safety