A recently released study shows that an undeclared accident at Mayak in Russia was likely the source of Ruthenium 106 detected over much of Europe in the fall of 2017.
Link to study: https://www.pnas.org/content/early/2019/07/25/1907571116
Link to interpreting article: https://strangesounds.org/2019/07/mysterious-radiation-cloud-europe-neclear-accident-mayak-russia.html

[from post at Radmon.org]

Thank you.

Go figure, this type of information always comes out too late for people to protect from it.