cwatters, to answer your question, I regularly use nitrogen in my job in the petrochemical industry, and there have been many cases of people being asphyxiated by this very hazardous gas. It doesn't kill by poisoning, but by lack of oxygen. Apparently there is no warning whatsoever, just instant blackout and death!! This is my first reply and I'd like to say how much I enjoy reading this fascinating and educational forum.
Last edited by Aeroshell48; 24th Dec 2007 at 15:38.