PROMINAS, with its Division of Natural Stone, exploits for several years the Mina Paula located in the Becerril′s synclinorium, in Ayllón′s Mountain Range (belonging to the Spanish Central System), formed by slates and Silurian quartzites. Several years of geological investigations have put of manifest an important volume of reserves that assure a continued and lasting production. We are specialized in the extraction, manufacture and later marketing of NATURAL QUARTZITE, in its Red Ayllon and Grey Ayllon variants. All our production is commercialized and exported directly from our quarry.
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PROMINAS, S.A. has been exploding for some years the varieties "Red Ayllon Quartzite and Grey Ayllon Quartzite" in the proximities of Riaza (Segovia). Seven years of geologic investigations showed the existence of an important volume of reserves. The method of operation, specifically developed and designed for this deposit, and a decided policy of investigation and development of systems of cut in operation bank, allows to extract regular blocks for its expedition and elaboration, which had not been possible by conventional methods.