http : //911research.wtc7.net/essays/thermite/cache/nyenvirolaw_wtcdustsignaturecompositionandmorphology.pdf [ 206 ] controlled demolition and diagonal cuts is explained here http : //whatreallyhappened.com/wrharticles/wtc_charges.html [ 207 ] niaz naik , a former pakistani foreign secretary , was told by senior american officials in mid-july that military action against afghanistan would go ahead by the middle of october ( bbc news , september 18 , 2001 ) .