Compañía Minera San Esteban Primera workers at this mine were paid around 20% higher wages than at other Chilean mines, due to its poor safety record. The San José Mine is located 45 kilometers northwest of Copiapó. It began operations in 1889. In 1957, Jorge Kemeny Letay, a Hungarian immigrant founded the San Esteban Mining Company (). The San José Mine () is a small copper-gold mine located near Copiapó, Atacama Region, Chile. The mine was the site of a 2010 collapse which trapped 33 miners underground. Its workings are reached by a long sloping roadway with many spiral turns (a diagram shows ten turns),
Farmington Mine disaster noise and, knowing what it meant, headed to the mine, where they discovered a rapidly spreading fire with flames shooting 150 feet into the air. Within hours, 21 miners made it to the surface but 78 were still trapped underground. The fires continued to burn for over a week, and on November 29, rescuers finally admitted defeat after air samples from drill holes showed air unable to sustain human life. The mine was sealed on November 30 with concrete to starve the fire of oxygen. In September 1969, the mine was unsealed in an attempt to recover the miners' bodies.