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 tools to create an opening whilst lying on his back. As at 7 a.m. on Saturday 6 May the raise borer had drilled about 11 metres of the 14.5 metre rescue tunnel. The mine decided on the shortened route late on Friday night. The major drilling operation was completed by 6 p.m. on Saturday, with only a few metres remaining to reach the trapped miners. Several hours work dismantling and removing the boring machine from the escape tunnel were required before the final phase of the rescue commenced. On 7 May the rescuers reached a belt of hard rock that