apparantly all workers have been evacuated due to extreme radiation levels at the plant
Apparently. Late news I heard was that the reading was a mistake, and the IAEA hasn't got a cracker abut it on it's website.
From the IAEA, 27/1330 UTC:
Radiation measurements in the containment vessels and suppression chambers of Units 1, 2 and 3 continued to decrease. White “smoke” continued to be emitted from Units 1 to 4.
Pressure in the RPV showed a slight increase at Unit 1 and was stable at Units 2 and 3, possibly indicating that there has been no major breach in the pressure vessels.