Dick Zehnle

How NIST Avoided a Real Analysis of the Physical Evidence of WTC Steel

Editorial Introduction by Dick Zehnle

NIST likes to point out how many scientists and engineers worked on its WTC investigation, and how much time was spent. But the number of participants and the time and money spent does not guarantee a thorough investigation.

NIST’s investigation is not in line with the most basic requirements of the scientific method. This is demonstrated by a closer look at NIST’s examination of the steel, which was based on the premise that nothing other than airplane impact damage and the subsequent fires brought down the Twin Towers. The most relevant question – why did the strong steel frames below the impact area give way? – is ignored. NIST cannot justify its failure to adequately examine the steel with its published results; examining the evidence adequately is a step that needs to be done at the beginning of an investigation.