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1. Your Information:

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2. Prior to 9/11/01 how many steel-framed high-rise buildings have suffered complete collapse due to fire?

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3. According to the 2008 report by the National Institute of Standards and Technology (NIST), World Trade Center Building 7 collapsed primarily due to:

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4. The series of structural failures that NIST found to be the most likely cause of the collapse involved:

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5. According to NIST, for what period of time and over what distance (in terms of stories) was WTC 7 in absolute free fall?

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6. True or False: NIST included in its final report a detailed examination of the sulfidated steel from WTC 7 that was documented in Appendix C of the FEMA report - which The New York Times had called “perhaps the deepest mystery uncovered in the investigation.”

(This concludes the quiz. The following questions are optional.)

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7. Optional: Do you believe that a new investigation into the collapse of World Trade Center Building 7 is warranted?

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8. Optional: Would you like to receive our occasional email news bulletins?

 
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