At Reactor, Damage Worse Than Feared

By MITSURU OBE and PHRED DVORAK in Tokyo and REBECCA SMITH in San Francisco
One of the reactors at Japan's Fukushima Daiichi nuclear plant likely suffered a substantial meltdown of its core, operator Tokyo Electric Power
Co. said Thursday, offering a fresh assessment of the reactor that
suggests it came closer than the operator had previously revealed to a
catastrophic meltdown.