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Soledad Maass

Block Caving and Geomechanics Engineer

Civil Mining Engineer from the University of Chile. She holds a Master in Mining with an emphasis in geomechanics, a Postgraduate Diploma in Block Caving Engineering, and is currently pursuing a PhD in Mining Engineering at the University of Chile.

Valedictorian of her Mining Engineering class at the University of Chile, she currently leads the Inclined Block Caving project, which will allow for massive exploitation of the Papomono deposit. 

With over 17 years of experience, she has specialized in underground mining design and geomechanics, in companies such as IM2, Codelco El Teniente Division, E-Mining Technology and Ingeroc SpA. She has been part of the Minera Tres Valles team since 2020.



Luis Vega Muñoz

CEO of Minera Tres Valles, has 23 years of professional experience in a variety of productive sectors, among them are mining, the distribution of petroleum, products, retail and defense.
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Rafael Pérez de Arce

VP of Corporate Relations at Tres Valles, holds more than 30 years of experience in the mining sector, leading him to be widely knowledgeable in terms of quality and efficiency in the field of project execution.
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Joe Phillips​

Joe Phillips is the COO of Minera Tres Valles.
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