Antofagasta in the north of Chile is a port city, there are complaints against black dust inhaled everyday by the inhabitants from the export of copper concentrates. There are studies that show the damage to the health of the population including babies. More cancers in proportion than any other city in the country. Hence a popular movement rose up, with the slogan "este polvo te mata" (this dust kills you), although it is ignored by politicians and government so far. The origin was the opposition to the building in the city of a new large industrial warehouse to gather large amounts of copper concentrate before shipping. One crucial moment was the stopping of trucks by a social movement. This is explained by one of the leaders or speakers for the movement (who insists it is a movement of different movements, not an organization). His name is Ricardo Diaz, who teaches at university. In his own words in Spanish, answering an interview . /// -¿Cuánta gente, actualmente, forma parte activa del movimiento “Este polvo te mata”? ¿Cuánta gente compone actualmente el “Núcleo Duro” de Este polvo te mata? - El Núcleo duro debemos ser alrededor de quince. No más que eso.