A woman said her husband continued to work while fully aware he was being bombarded with radiation. In a heartbreaking email, he told his wife: 'Please continue to live well, I cannot be home for a while.'
One girl tweeted in a message translated by ABC: 'My dad went to the nuclear plant, I've never seen my mother cry so hard. People at the plant are struggling, sacrificing themselves to protect you. Please dad come back alive.'
But it is becoming even more pressing that the Fukushima succeed after it was revealed today that Tokyo's tap water has been contaminated by unusual levels of radiation.
The government have issued a warning to all mothers urging them not to let babies drink the tap water.
The warning came after it emerged last night that radioactive particles have reached Europe and are heading towards Britain in the wake of the catastrophe that officials say could cost up to £190billion - making it the costliest natural disaster in history.
And fresh safety concerns arose today as black smoke was spotted emerging from Unit 3 of the plant, prompting a temporary evacuation of all workers from the complex, operators Tokyo Electric Power company said.
Tokyo Water Bureau officials said levels of radioactive iodine in some city tap water contained 210 becquerels per litre of iodine 131 - two times the recommended limit for infants.
They warned parents not to give babies tap water, although they said it is not an immediate health risk for adults.
Nearly two weeks after the twin March 11 disasters, nuclear officials were still struggling to stabilise the damaged and overheated Fukushima Dai-Ichi plant, which has been leaking radiation since the disasters knocked out the plant's cooling systems.
Radiation has seeped into vegetables, raw milk, the water supply and even seawater in the areas surrounding the plant.
Meanwhile, officials in Iceland have detected ‘minuscule amounts’ of radioactive particles believed to have come from Fukushima, the site of the worst nuclear accident in 25 years.
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Five are believed to have already died and 15 are injured while others have said they know the radiation will kill them.
The original 50 brave souls were later joined by 150 colleagues and rotated in teams to limit their exposure to the radiation spewing from over-heating spent fuel rods after a series of explosions at the site. They were today joined by scores more workers.
Japan has rallied behind the workers with relatives telling of heart-breaking messages sent at the height of the crisis.