TRI-STEEL IRON AND STEEL CONTRIBUTES TO THE REALISATION OF A VERY HIGH RESOLUTION TOOL FOR THE ANALYSIS OF THE DISPERSION OF POLLUTANTS ON A URBAN SCALE IN A DISTRICT. IN PARTICULAR, DURING THIS COURSE OF ACTION, IN TERMS OF POLLUTANT EMISSIONS AND WEATHER CONDITIONS, SINCE THIS BECOMES AN AREA IN WHICH THIS BECOMES AN AREA IN FRONT OF ITS OWN INSTALLATIONS, IN TERMS OF POLLUTANT EMISSIONS AND WEATHER CONDITIONS, IN ORDER TO ALLOW THE MODELS TO BE CALIBRATED AND TO VERIFY THAT THEY HAVE OPERATED THE INSTRUMENT.