the material that was burning and that exploded inside this fertilizer plant contains toxic fumes and there are many people complaining of breathing problems. are these types of injuries potentially going to be long-term or something that is temporary? >> don't know the chemical compound that well, so really can't ascertain the long-term impact of what would have happened by breathing those chemicals in. we did treat all of those patients, the majority of them were stable. many were discharged from the hospital. >> i'm sorry to interrupt, but we understand the chemical is anhydrous ammonia. >> that's correct. >> and it is a gas that can cause severe burns along with respiratory issues. exposure in high concentrations can lead to death. have you dealt with any burns do you know as a result of the anyhydrous ammonia as well? >> at this point we are not aware of any burns related to