- Chernobyl > Contaminated area (percent of country): This stat shows the percentage of the listed countries' surface that was contaminated by the Chernobyl nuclear disaster, in the radiation range from 37 to 185 kilobecquerels/m2 of Caesium 3, a radioactive isotope of caesium which is one of the more common products of nuclear fission. This was the lowest level of radioactivity detected in Europe, and some of these countries received higher levels of contamination, although in less extensive areas.
SOURCES: Wikipedia: Chernobyl disaster (Areas of Europe contaminated with Cs) "3.1.5. Deposition of radionuclides on soil surfaces" (PDF). Environmental Consequences of the Chernobyl Accident and their Remediation: Twenty Years of Experience, Report of the Chernobyl Forum Expert Group ‘Environment’ . Vienna: International Atomic Energy Agency (IAEA). 2006. pp. 23–25. ISBN 92-0-114705-8 . Retrieved 2013-09-12, Ikäheimonen, T.K. (ed.). Ympäristön Radioaktiivisuus Suomessa – 20 Vuotta Tshernobylista [ Environmental Radioactivity in Finland - 20 Years from Chernobyl ] . Säteilyturvakeskus Stralsäkerhetscentralen (STUK, Radiation and Nuclear Safety Authority), Gould, Peter (1990). Fire In the Rain: The Dramatic Consequences of Chernobyl . Baltimore, MD: Johns Hopkins Press.)