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 ) , not by a vertical mineshaft
2010 collapse
2010 Copiapó mining accident
Compañía Minera San Esteban Primera