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Uploaded on Apr 1, 2007
Clip from 9/11 Mysteries: Clip from 9/11 Mysteries: Kevin Ryan of Underwriters Laboratories (UL), the company which certified the steel used in the World Trade Center, says there is no way the WTC towers collapsed from fire. If fire didn't cause the tangled masses of molten steel and concrete, what did? It's time for a new investigation.