For the first time, we're seeing video of that terrible accident on the set of Transformers 3 in which a female extra was badly injured.

Watch the video on RadarOnline.com.

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The video - obtained exclusively by RadarOnline.com - captures the horrifying moment last Wednesday, September 1 when the extra was hurt as a scene for the Michael Bay blockbuster was being shot in Hammond, Indiana, which is near Chicago.

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