A music enthusiast, at the age of 15 he was admitted to the University of Chile Conservatory to study classical guitar, being lured by the Nueva canción movement.

With his brother, Joaquín, he was part was of the folk group Aquelarre, playing titles such as, El cautivo de Tiltil and Valparaíso.

After the return of democracy, he performed senior roles at the Central Bank of Chile between 1990 and 1997, occupying the positions of Director of Research and Chief Economist.

The internal revenue service of Chile (SII) questioned de operations because copper was sold at an average of usd1,16 per pound, while in the London Exchange was trading at US$3,87.

[2][3][4][5] The concept of extractivism has been criticized by Eyzaguirre, who cites the mining sector of Australia as a successful example of a "deep and sophisticated value chain", with high human capital, self-produced machinery and associated top-tier scientific research.