The Russian emergency service worker was trying to rescue a child from a flat fire when he was struck on the head by the snow.
It knocked him backwards and despite being clearly dazed he managed to hang on to the ladder until a fellow firefighter came to his aid.
The footage shows a colleague passing over him to grab hold of the toddler and take him to safety.
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Must see close call video: Mound of snow almost knocks firefighter off of aerial ladder during rescue.