Kevin Ryan: Demolition Access to the WTC Towers

This four-part series was originally published on the web as separate essays on several sites beginning in July 2010 and ending in February 2011. It has been collected here in a pdf document for easy reference. The only changes made were to put all the Notes at the end, rather than after each section, and to provide live links when broken ones were found.  Ryan’s Nov. 11, 2004 email to NIST, which resulted in his being fired from Underwriters Laboratories, is appended for its historical significance.