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Tres Valles

Project Stages

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Early Works
In Construction
Current Stage In production
Project Details


The Tres Valles project includes the Papamono underground mine in Illapel and the Don Gabriel open pit site located in Salamanca. The ore will be processed by the method of extracting (LX-SX-EW process) mixed oxide-sulfide ore. Tres Valles will require 600 workers during the construction phase and is expected to generate 300 jobs during the ensuing operational phase. Will reach full commercial output capacity by the middle of 2012. In May 2013, former owner Brazilian miner Vale submitted an environmental impact assessment (EIA) to increase throughput at the processing plant from 5,400t/d to 7,500t/d in order to achieve the production goal of 200,000t of copper over the 11-year life of the operation. In December 2013 Vale sold its Tres Valles copper complex in Chile to local firm Vecchiola in a deal worth US$25mn.

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Principal Works

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  • * Figures and dates are as per the latest publicly available information, as well as information gathered by BNamericas reporters and analysts and are subject to change.

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Key Specs

Full Name
Tres Valles
Project Type
Copper, Open pit mining, Underground mining
Development Phase
In production
Project Status
Project Capacity
18,500  t/y (tons per year)  Copper
 Open pit mining
 Underground mining
US$ 102mn
Completion Date

Tres Valles is located in Salamanca and Illapel districts in region IV's Choapa province.

* The map coordinates provided represent the approximate latitude and longitude, and not the exact location, of the project in question. 



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Owner / operator
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General Manager
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General Manager
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