"The important thing to understand is that when scientific evidence demonstrates a certain fact, we should never ignore or deny that fact because we can’t immediately explain the history behind it.

  For example, we have evidence that there is methane in the atmosphere of Titan.  This evidence comes from measurements of the light emitted and scattered from that moon.  We would not say that it could not be methane because we can’t fully explain how the methane got there.  Similarly, we have much evidence that there were explosives at the WTC.  It would be unwise to ignore that evidence until we can explain how those explosives got there".

Kevin Ryan

 former Site Manager for Environmental Health Laboratories, a division of Underwriters Laboratories (UL). Mr. Ryan, a Chemist and laboratory manager, was fired by UL in 2004 for publicly questioning the report being drafted by the National Institute of Standards and Technology (NIST) on their World Trade Center investigation. In the intervening period, Ryan has completed additional research while his original questions, which have become increasingly important over time, remain unanswered by UL or NIST