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
Schramm Inc. Schramm Inc. Schramm, Inc. is a manufacturer of drilling equipment and truck mounted drilling rigs headquartered in Chester County, Pennsylvania. The company was founded in 1900 by Chris Schramm. In 2010, Schramm, Inc. assisted in the rescue of 33 miners trapped for 69 days as a result of the Copiapó mining accident in Chile. The company built both drilling rigs that were key in saving the miners. The Schramm T685 WS truck mounted drill bored a hole that, on 22 August 2010, was the first to break through to the 33 trapped men, confirming they had survived the accident. The