Compania Minera San Esteban Primera (San Esteban Primera Mining Company) is a Chilean mining company, dedicated to the production of copper and gold concentrates. San Estebans headquarters are located in Providencia, Santiago Metropolitan Region.

Compania Minera San Esteban Primera (CMSEP) is a Chilean mining company that has been in operation since 1880. The company is located in the commune of Ovalle, in the Coquimbo region of Chile. CMSEP is one of the oldest and most experienced mining companies in the region, and it is the largest producer of copper, gold, and silver in the Coquimbo region.

The company operates two main open-pit mines, San Esteban and La Coipa, as well as several smaller underground mines. CMSEP has a total of 4,000 employees, and its operations are divided into three main areas: exploration, extraction, and processing. The company is committed to responsible mining, and it has implemented a number of environmental and safety measures to ensure that its operations are conducted in a safe and sustainable manner.

CMSEP is a major contributor to the economy of the Coquimbo region, providing employment and a source of income for thousands of people. The company is also committed to the development of the local community, and it has established a number of initiatives to support education, health, and social welfare in the region.

CMSEP is a leader in the mining industry in Chile, and its commitment to responsible mining practices has enabled it to remain a major player in the industry. The company is committed to providing a safe and healthy work environment for its employees, and it is continually investing in technology and safety measures to ensure that its operations are conducted in a sustainable manner. CMSEP is a major contributor to the economy of the Coquimbo region, and it is a leader in the mining industry in Chile.