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The process of extracting energy from rocks in places like Pennsylvania, Texas, Ohio, Indiana, North and South Dakota and Illinois using hydraulic fracturing is capturing a great deal of attention lately — not only in this space, but also in the movies and in the popular press. Fracturing rock is not a new process. Indeed, that is what a drill bit does. High volume hydraulic fracturing in vertical wells is a somewhat newer technology, but it too has been used in the United States as a method of extracting energy from rock for years.