Why did John Gross claim he had no evidence of high temps in the WTC rubble?

OffGuardian | October 1, 2016 Underground it was still so hot that molten metal dripped down the walls… Ken Holden, director NY Dept of Design & Construction, excerpted in video above This video shows John Gross, a NIST engineer who played a central role in the investigation of the WTC collapses, claiming he has seen […]