Mystery radioactive cloud over

Monitoring stations measured elevated levels of ruthenium 106 drifting across Europe between September 29 and October 6. Levels of the radionuclide have now fallen, and pollution is no longer detected

October 6: Ruthenium levels start to decrease

September: Based on weather patterns, contamination emanated from southern Russia or Kazakhstan

Kazakhstan 

Radiation levels: Highest concentration measured in Germany was
substantially lower than that absorbed by natural ambient radiation

Lowest                   Highest 

Source: Institute for Radiation Protection and Nuclear Safety   © GRAPHIC NEWS