2010 Copiapó mining accident 2010 Copiapó mining accident The 2010 Copiapó mining accident, also known then as the "Chilean mining accident", began on Thursday, 5 August 2010 with a cave-in at the San José copper–gold mine, located in the Atacama Desert north of the regional capital of Copiapó, in northern Chile. Thirty-three men, trapped underground and from the mine's entrance via spiraling underground ramps, were rescued after 69 days. After the state-owned mining company, Codelco, took over rescue efforts from the mine's owners, exploratory boreholes were drilled, and seventeen days after the accident a note was found taped to a drill bit pulled back
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