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),
Beaconsfield Mine collapse tools to create an opening whilst lying on his back. As at 7 a.m. on Saturday 6 May the raise borer had drilled about 11 metres of the 14.5 metre rescue tunnel. The mine decided on the shortened route late on Friday night. The major drilling operation was completed by 6 p.m. on Saturday, with only a few metres remaining to reach the trapped miners. Several hours work dismantling and removing the boring machine from the escape tunnel were required before the final phase of the rescue commenced. On 7 May the rescuers reached a belt of hard rock that