La Negra Antofagasta
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La Negra is a small industrial complex 10 km. east of Antofagasta, Chile. Among La Negra industries, the two major ones are Altonorte, a copper smelter refinery, and a cement plant, Inacesa.
La Negra is also the intersection of Pan-American Highway and the road from Antofagasta to Escondida Mine.