(Mina Las Heras)
An old silver mine worked intensively during the late 1800s until the first decade of the 1900s. According to old reports this mine produced among the finest silver wires ever found in Chile.
Ref.:
García, A.Z. (1917); "Breves apuntes sobre algunos centros mineros principales del departamento de Copiapo"; Edit. Unión, Valparaiso, Chile.