Private company

Compañía Minera San Esteban Primera

Chilean mining company

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, 2010.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

1957Founded1
  • Industrycopper, metal1
  • HeadquartersSantiago1
Mina San José de Copiapó en 2010
Photo: desierto_atacama, CC BY-SA 2.0, via Wikimedia Commons4

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.2

The story

Background

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 year in mining accidents in Chile, with a high of 43 in 2008, according to a review of data collected by the state regulatory agency Servicio Nacional de Geología y Minería de Chile (abbreviated Sernageomin).

The Compañía Minera San Esteban Primera (CMSE) is notorious in the mineral-rich region and, according to an official with the Chilean Safety Association, eight workers have died inside the company's mines in the 12 years to 2010. Between 2004 and 2010, the company received 42 fines for breaching safety regulations. The San Jose Mine was shut down in 2007 when relatives of a miner who had died in an accident sued company executives, but was reopened in 2008 despite failing to comply with all regulations. The matter is still under investigation according to mining committee Senator Baldo Prokurica. Due to budget constraints, there were only three inspectors for the Atacama Region's 884 mines.

CMSE had ignored warnings and worker-initiated lawsuits concerning unsafe working conditions in its mines. CMSE's management operates "without listening to the voice of the workers when they say that there is danger or risk," said Javier Castillo, secretary of the trade union that represents miners and a former miner at the San José mine. "Nobody listens to us. Then they say we're right. If they would have believed the workers, we would not be lamenting this now," said Gerardo Núñez, head of the union at a nearby Candelaria Norte mine.

Chilean copper mine workers are among the highest-paid miners in South America. Although the accident itself has put into question mine safety in Chile, serious accidents in large mines are rare, particularly in those owned by the state copper mining company, Codelco, or by multinational companies. However, smaller mines such as the one at San José have generally lower safety standards. Mine workers at this mine were paid around 20% higher wages than at other Chilean mines, due to its poor safety record.

History

The San José Mine is located 45 kilometers northwest of Copiapó. It began operations in 1889. In 1957, Jorge Kemeny Letay, a Hungarian immigrant and nephew of mining businessman Emérico Letay founded the San Esteban Mining Company (Spanish: Compañía Minera San Esteban). Jorge died in 2000 and the administration of the mine was overtaken by his two sons Marcelo and Emérico Kemeny Füller. The latter died in 2004 and Marcelo then associated with his father-in-law Alejandro Bohn Berenguer who became gerente geneal (CEO). Despite the income of the mine not being enough to invest in security measures needed to mine at great depths Bohn is reported to have pushed for continued mining.

From Wikipedia’s article on Compañía Minera San Esteban Primera, shared under CC BY-SA 4.0.3

Timeline

  1. 1957Founded Founded1