Yes, but such an environment only occurs during a nuclear disaster, really.
Once the disaster has occurred or is occurring, it is moot whether or not the graphite is flammable, since it is only on fire once the problem has gone out of control.
 It is also evident that you didn't read, or at least remember, my introduction to the edit.
Last edited by Aradiel; 05-30-2006 at 10:36 AM.
"Beer is the mind killer. Beer is the little death that brings total obliteration. I will face my beer. I will permit it to pass over me and through me, and when it has gone past I will turn the inner eye to see its path. When the beer has gone there will be nothing. Only I will remain."
Make beer, not war.