Vissa företag får tydligen fortsätta tillverkningen i evakueringszonen, om de lovar att kontrollmäta sin personal och hålla fönsterna stängda.
"Companies in no-go zone begin radiation checks
Companies in a village near the Fukushima Daiichi nuclear plant that have been granted permission to continue operations have begun daily monitoring of their workplace radiation levels.
The government expanded the 20-kilometer evacuation zone around the plant last month, due to the risks associated with long-term radiation exposure. Residents of Iitate Village, 30 kilometers northwest of the plant, must evacuate by the end of May.
But the government has allowed 9 companies in the village to continue operations on the condition that they monitor and report their workers' exposure to radiation.
A local precision equipment maker began conducting worker radiation checks on Monday.
Some 60 employees received instructions on how to use a radiation dosimeter. They then measured and recorded their radiation levels.
The company's workers are to take exposure readings on a daily basis before going home from work.
The company says it is also using various strategies to reduce the amount of radioactive matter that enters the factory, such as keeping windows closed and moving outdoor air conditioning units above the ground."
http://www3.nhk.or.jp/daily/english/23_26.html