911- NIST engineer John Gross denies WTC molten steel - chunk of lava

Fused steel and concrete - like a "chunk of lava". <br /> <br />From: https://www(dot)youtube(dot)com/watch?v=3SLIzSCt_cg <br />Download video from here: <br />http://xenomorph.s3.amazonaws.com/John-Gross-Molten-Steel.avi