Mexico is a country rich in oil and other minerals, yet the few refineries in high demand and force him to have to import oil from other countries in the last 5 years the import of gasoline increased 404% due to an increase in demand and lack of refineries themselves, if we had more oil refineries probably all would be different.
This is what happens in Mexico and other countries, even having a lot of oil in their countries do not invest in new refineries and prefer to rely on foreign oil.
Fortunately, in Mexico and the refinery is being built Bicentennial same will be completed by 2015 and generate over 400 thousand permanent jobs and more than 40 000 direct and indirect jobs during construction.
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I would like for Pemex to invest more in such works, as well as refineries, not if the fear of their choice to invest or spend it on corruption, but any country should at least do your best not to rely 100% the other countries.
Something similar happens in the Mines of Gold and other metals that are in Mexico, Mexicans have the resources to do so are afraid to invest, which is why foreign companies arrive exploit the mines (and of course also to the employees) and benefit from Mexican soil with good reason since they were not afraid to invest.