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A forensic scientist was left with a brain injury after a block of ice crashed 90ft on her head as she took a cigarette break at work.
The frozen lump fell off the rooftop of an eight storey building at Moscow academy and struck Anna Zhuravlyova as she was heading back inside.
CCTV shows the 27-year-old walking towards the building with a group of people.
But after ice fell from above she was sent tumbling backwards and appeared to crash her head on the pavement.