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
2010 Copiapó mining accident means to find the men were sought. The accident happened soon after sharp criticism of the government's handling of the Chilean earthquake and tsunami. Chile's President, Sebastián Piñera, cut short an official trip and returned to Chile in order to visit the mine. Exploratory boreholes about in diameter were drilled in an attempt to find the miners. Out-of-date mine shaft maps complicated rescue efforts and several boreholes drifted off-target due to the extreme drilling depth and the extremely hard rock. On 19 August one of the probes reached a space where the miners were believed to be trapped but found