NIIGATA, Japan -- Mitsubishi Heavy Industries has begun commercializing small indoor tents designed to block radioactive material in the event of a nuclear plant emergency.
Models are cheaper and portable thanks to standardized dimensions

A prototype of Mitsubishi Heavy Industries' radiation-shielding tent at Kashiwazaki in Niigata prefecture. (Photo by Yugo Takagaki)
NIIGATA, Japan -- Mitsubishi Heavy Industries has begun commercializing small indoor tents designed to block radioactive material in the event of a nuclear plant emergency.