*2 聯合国原子能輻射效应科学委员会(United Nations Scientific Committee on the Effects of Atomic Radiation, UNSCEAR) 其他工业应用；天然射源類之民用飞行、石油与天然气工业、矿物与矿石 处理；其他類之教育机构、兽医、其..
"Some 45, 000 square kilometers in Western Europe have measurable levels of radioactivity in the soil from Chernobyl above the criterion applied in the former Soviet Union to designate 'contaminated' areas, " said UNSCEAR Secretary Malcolm Crick.
The effects of radiation only start to become clear at high acute absorbed doses of over 1 Sv (100 rem), and even then it is necessary to eliminate other potential causes before radiation can be unequivocally said to be the cause, advised UNSCEAR.