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
Beaconsfield Mine collapse the earthquake had a magnitude of 2.3 on the Richter scale, at a shallow depth at coordinates . Earlier speculation had suggested that mine blasting had caused the collapse. Three of the miners working underground at the time were trapped, and early reports suggested that 14 miners who were underground at the time had managed to scramble to safety. The mining company, Beaconsfield Mine Joint Venture, released a press statement saying they held "grave concerns for the three miners' wellbeing". Larry Knight (44), Brant Webb (37) and Todd Russell (34) were the three miners who remained unaccounted for. Knight had