I don't know, but the good news there is that the one they are most concerned with is the one on the coast, and the prevailing winds blow toward the water.
I dont think anyone really knows. The problem is that we keep getting bombarded with information, alot of it contradictory. i've read stories that range from the concrete contaiment building being the source of the exploision that happened recently, to the building AROUND the containment being the source, to some anciallary building near the containments being the source.
The RIGHT NOW news media is not being helpful with this. We dont even know the sources of 90% of the statements being made.
People have to understand that the only time we will know exactly what happened is after everything is over, and the engineers can go look back and do a failure analysis with hard data.
I'm actually starting to feel bad about commenting on this, because I dont have all the information, and as an engineer (liscensed) I should know better than making guesses on partial data.