I write in reply to Miles Lacey (Letters, 4).
The respected group Architects and Engineers for 9/11 Truth, which has examined the file footage and rubble and has professional interest in building construction, comes to a very different and consistent conclusion on how the Twin Towers and Tower 7 were demolished. This fact alone demolishes Mr Lacey’s assertions of professional consensus. That’s before I point out that Tower 7 and the Twin Towers were not built in the same way. One was a classic steel-frame building, the other two had outer load-bearing skeletons and central cores of solid steel and concrete. I do not call Mr Lacey a geek, a househusband, or any such term, but I do think he’s in denial about the unanswered questions that even Iranian President Mahmoud Ahmadinejad is aware of. CHRISTOPHER ASHLEY