By searching for protest events in online media, this database was built with 99 cases of protests associated with mining tailings in Chile. It is the first database of its kind in Latin America. It was elaborated under the auspices of the Thesis project to obtain a Master's degree in Political Science at the University of Chile, partially funded by the Center for the Study of Conflict and Social Cohesion (ANID/FONDAP 15130009).