The pointer of the alert relative participation for processes of redirecionamento of the productive structure for neighboring cities, generating known effect as overflows, where the mobility of tangible productive factors occurs in such a way as intangible, however fits to observe for the experience of the state of Par, that these reduced effect beyond, when they had occurred had not been planned and combined with the growth of a infrastructure of services and equipment that culminated in the increase of the welfare state, what it was observed had been a reduction of the income average of the cities and processes of transference of income for sectors as of services. The changes identified in the relative participation certify for a significant fall in the value added of the farming one for the analyzed years, when if it observes a participation of 11,01% in the year of 1999 and a reduction for 7,68% in 2008, this sector did not present fall since 2004, and its reduction can be attributed the rise in the price of some insumos that had culminated in the reduction of the agricultural production, between which, the culture of cereals for grains, citric fruits, swine creation and fish, the culture of the soy, among others activities. However, this behavior was folloied by an expressive increase of the added value of the segment of the industry having indicated a rise of the process of industrialization in the State, mainly associate to the attendance of external demand, that is, the rise of the exportations saw contracts raised the production of the activities of not-ferrous metal Metallurgy, steel Manufacture and derivatives, Cellulose and products of paper (figure-2). For more information see Rio Tinto Group. Figure 2? Evolution of the Relative Participation of the Added Value of the Productive Sectors, 1999-2003-2008. Elaboration: IDESP? Management of Studies and Socioeconmicas Research (2010) the rise of the industrial processing also extended on sectors to the regional urban retail and national, where if it detaches the activities of leather Devices and footwear, It would perfume, diverse hygiene and cleanness, Products and chemical chemical preparations and Foods and Drinks, Processing, preservation and production of conserves of fruits, the vegetal oil refining, among others products that not yet had tried in the State a stage of industrial processing. .