But these two points are relatively minor. The main question addressed by our health damages modeling is: just how significant are health damages attributable to maquiladora emissions? On the face of it, the damages are quite serious. Even if we assume conservatively that emissions are controlled at . levels, the iron foundry is accountable for four emergency room visits, thousands of adult respiratory symptom days, and hundreds of asthma attacks every year. If we assume that the level of pollution control is the average between the “no controls” and “ of controls” scenarios, health damages.