When you apply for a job as a skyscraper window cleaner , a head for heights is essential . But you probably do n't anticipate being repeatedly slammed into the side of the building as your platform is thrown around like a toy in the wind . Such was the fate of two window cleaners working at a skyscraper in Shanghai recently , People ’ s Daily Online reported , with their ordeal filmed from inside the building by an onlooker . The incident occurred at the 91st floor of the 101-storey Shanghai World Financial Centre , the city ’ s second-tallest building at 492 metres ( 1,614ft ) . The one-minute video shows the platform swing violently in wind with the Lujiazui Financial District hundreds of metres below . The platform can be heard striking the windows of the building repeatedly , and at least two panes of glass cracked due to the force of the impact with shards falling on to the street below . Terrifying : Two window cleaners had a ride of their life after their platform was blown around by high winds . Astonishingly , the two workers who were stuck in the platform only suffered minor injuries . Authorities said they were investigating the incident . Mile-high : The incident took place near the 91st of the 101-floor Shanghai International Financial Centre . Helpless : The platform swung around violent . Luckily , the workers only suffered from minor injuries .
Terrifying footage was filmed from 91st floor of a Shanghai skyscraper . Repeated heavy bangs can be heard and cracked two panes of glass . Cleaners trapped in the platform suffered minor injuries in the incident .