We continue to monitor the explosion of the containment building in Japan.  The containment building is a steel reinforced concrete structure.  It is airtight and contains the reactor, its pressurizer, coolant pumps, steam generator, and basically all the equipment and piping.  It appears as if the entire structure has been compromised.   This crisis has become dramatically worse.  Experts are now doing all they can to avoid a meltdown.  Stay tuned to this site for frequent updates.