CLAY - MINE "FUNTANA PIROI" - ESCALAPLANO The layer extends without solution of continuity for approximately 900 hectares with reservoirs assessed for various million tons. Geology of the field is that typical one of the formations of the Sardinia centers them in particular about Mesozoic, sedimentary cover discordant with the palaeozoic peneplained: in particular in the field of Escalaplano are very visible to us the argillaceous formation of our interest is present. The thickness of such varied formation from the 8 to the 10 meters and is constituted from an alternation of siltstone-arenaceous levels grays, plastic levels kaolinitic-illitic grays and rossastri. The contents in argillaceous minerals varied from a minimum of 60% in the arenaceous levels to a maximum of 80% in the plastic levels while the varied Quartz between 15 and 30 %; subordinates feldspars and mica. Always extractive activity preceded from a succession of surveys for estimate the qualitative and quantitative continuity of the argillaceous formation; the cultivation is executed selective and every extracted layer is subordinate to successive chemical-physical analyses and of ceramics characterization and on the base of the aforesaid analyses, the formulations of mixtures trades come predisposed in conformity with the detailed lists of product agreed with the Customers. The production addresses to the monobaking red and white, to the refractory one and in greater measure to the field of the porcelain Gres and the enameled Gres. The annual production is attested on the 100,000 ton.