reported. instead, officials believe it started a second blaze, which firefighters had to battle today. they had a plan to drop water or acid on it from a helicopter. that seems less likely now. they are considering pumping it through the walls instead. until workers, we should mention, are still missing from yesterday's explosion. we know now that the roof was cracked by the blast. workers today have been unable to approach the storage because of those high levels of radioactivity. again, now those technicians who have been putting their lives at risk to stay at the plant have left. in just the past couple of hours, we have had new reports of white smoke emanating from reactor number three and reactor number four. here in tokyo, 150 miles south of the reactor site, low levels of radiation were detected today. ten times the normal level they