"What we believe
at this time is that there has been a hydrogen explosion in this unit due to an
uncovering of the fuel in the fuel pool," Gregory Jaczko told a House
energy and commerce subcommittee hearing Wednesday. "We believe that secondary containment has been destroyed and
there is no water in the spent fuel pool, and we believe that radiation levels
are extremely high, which could possibly impact the ability to take corrective
The Japanese government's radiation report for the country's
47 prefectures Wednesday had a notable omission — Fukushima,
ground zero in Japan's
nuclear crisis. Measurements from Ibaraki, just
south of Fukushima,
were also blanked out.
Radiation experts in the USA
say that the lack of information about radioactivity released from the
smoldering reactors makes it impossible to gauge the current danger, project
how bad a potential meltdown might be or calculate how much fallout might reach
Scientists Project Path of Radiation Plume
A United Nations
the possible movement of the radioactive plume coming from crippled Japanese
reactors shows it churning across the Pacific, and touching the Aleutian Islands on Thursday before hitting Southern California late Friday.
The forecast, calculated Tuesday, is based on patterns of
Pacific winds at that time and the predicted path is likely to change as
weather patterns shift.