[Pikachu_Dad]

“Lev Fyodorov, a top Russian chemical expert, said Freon pushed oxygen out, causing those inside to die of suffocation. He also said the scarce official information was making it difficult to understand exactly what happened on the submarine.”

Ya, suffocation.

http://news.yahoo.com/s/ap/20081109/ap_on_re_eu/eu_russia_submarine

[mad_as_he$$]

I spent many years in semiconductor wafer fab facilities that used Halon suppression system. I still get monitored today for damage to my body for it. that and heavy metal and solvent traces.