What were the main reasons that made Western Mining a successful company on making discoveries?

It was mainly about the leadership of the organisation and the culture, which focused on innovation, scientific excellence and the individual development of Geoscientists. There was a strong emphasis on looking in new areas where people had not thought to explore before.

How do you think the mantle composition influences on the formation of Cu and Au deposits?

Mantle structure influences all deposits because it provides important plumbing for ore-forming processes. The actual composition of the mantle is quite important for the formation of Au deposits which require metasomatised mantle lithosphere as a source. Cu deposits however, do not depend on the composition of the mantle but rather the regional geodynamics that occur during arc magmatism.

How could we "map" mantle heterogeneities in base of superficial evidences?

Yes, to a certain extent we can use superficial features such as surface geology and structure as proxies for underlying mantle structure. Patterns of features in these superficial data sets (for example, alignments of mantle-derived intrusive rocks such as lamprophyres) can be used to infer a probable relationship with underlying mantle structures. Gravity data are particularly useful as they tend to record the signal of deeper structure. Although of course there is always significant uncertainty with this approach, when we see the coincidence in patterns between several different data sets this gives us more confidence that we are really looking at a deep mantle-related feature. However, as we get better data sets (seismic tomography, isotopic mapping) that directly map the mantle, our ability to identify these structures will improve.

How do you see the mineral exploration potential for Cu and Au here in Peru?

Peru is a very well endowed region of the world and has great mineral Exploration potential for Cu and Au.