Greenpeace calls for investigation after levels of ruthenium-106 in atmosphere near Urals site found to be 986 times norm.

A secretive Russian nuclear facility has denied it was behind high atmospheric concentrations of the radioactive isotope ruthenium-106, after Russia’s meteorological service confirmed levels several hundred times the norm were found in several locations in the country during tests in late September.

Greenpeace has called for an investigation into a potential cover-up of a nuclear accident after Russia’s nuclear agency had denied European reports of increased ruthenium-106 levels. Rosgidromet, the weather monitoring service, released test data on Monday that showed levels were indeed much higher than normal. The most potent site was Argayash in the south Urals, where levels were 986 times the norm. Continue reading.