Our Tailing Program, “Tranque”, is a private-public initiative seeking to contribute with safe and reliable tailings deposits operations. It develops tools to improve monitoring of the physical stability and potential impact on the surrounding waters, delivering quality and timely information to authorities, mining companies, and communities. It improves communication between parties as well as the response to emergency situations.

In 2018 this initiative rose to a new level when it was factored in the National Tailings Policy announced by the Ministry of Mining; it has established the implementation of tools to manage active deposits by creating the National Observatory of Tailings Deposits.

Chile is the third country in the world with the largest amount of tailings, with a total of 742 in 2019.

Program’s Roadmap

APRIL 2019

In CESCO’s Third International Seminar on Mining and Sustainability, the consolidation of the National Tailings Policy advances with the goal of establishing the National Tailings Observatory, under the responsibility of Sernageomin.



Work of incorporating small-scale mining begins with onsite visits to gather information and analyze implementation strategies.
Start-up of the online tailings deposit monitoring system at the El Mauro dam of Minera Los Pelambres.
Launch of publication “Progress and Challenges for the Management of Tailings Deposits in Chile”
80% of the medium-sized mining sector has been included in the Program, developing information gathering and dissemination activities.
With the incorporation of INRIA Chile, programming of the information management platform begins.
The Ministry of Mining announces the National Tailings Policy, with the inclusion of online monitoring of tailings deposits developed by the Tranque Program.
MARCH 2018
Version 1 of the Physical Stability Index is validated.
With ONEMI and ENAMI’s official incorporation, the governance of the initiative with 22 institutions is implemented.
Version 1 of the EMAC index (Evaluation and Monitoring of Surrounding Waters) is validated.

Our commitment is global. This initiative contributes to:

This is a public-private initiative under the aegis of the Programa Nacional de Minería Alta Ley; it is co-designed and implemented by Fundación Chile, Corfo, Ministry of Mining, SERNAGEOMIN, ONEMI, SMA, DGA, Antofagasta Minerals, BHP, CODELCO, Anglo American, ENAMI, SONAMI, INRIA Chile, AMTC and Valor Compartido. La iniciativa pública-privada, bajo el alero del Programa Nacional de Minería Alta Ley, es co-diseñada e implementada por Fundación Chile, Corfo, Ministerio de Minería, Sernageomin, ONEMI, SMA, DGA, Antofagasta Minerals, BHP, Codelco, Anglo American, ENAMI, SONAMI INRIA Chile, AMTC y Valor Compartido.

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