posted on Aug, 3 2008 @ 02:56 AM
While looking into other matters, I came across a problem that I can't figure out concerning the time line for the North Tower.
In the final report, NIST NCSTAR 1, on page 137/298 (of the PDF) Table 62 it states at 10:18 "Smoke suddenly expelled on the north face (floors 92,
94, 95 to 98) and west face (92, 94 to 98)." And also notice the time for the collapse is 10:28:22 which matches their time taken from TV
broadcasts.
But then I was looking through the NIST NCSTAR 1-6 PDF and on page 238/470 Table 6-1 and the first thing I noticed is that they have published here
10:28:20 as the collapse time, which is 2 seconds sooner than their TV broadcast time (and they claim the TV broadcast number is within 1 second
accuracy).
I also noticed that there is no event listed for 10:18 as in the other document, but there is one listed for 10:28:18 where they say pressure pulses
pushed smoke and debris out of three faces (all except for the south side that the top rotated towards... is this significant? did they ever explain
what these pulses were 4 seconds before the collapse began?)
I also noticed that they do mention 10:18 in the paragraph immediately before the Table. Is this a typo and it should actually read 10:28:18? I would
have thought so, but their descriptions of what happened are different: they reference smoke coming out of totally different areas. But, also, in NIST
NCSTAR 1 it can't be a typo because it's listed before the 10:23 event, which means it was actually moved in the order of events.
Then I looked at the pictures in Figure 6-7 (page 244/470 of NCSTAR 1-6) which were referenced in the table and it seems to confirm the 10:28:18
time.
So what's going on here? My first thought is that they may have altered it for the Final Report ("who's gonna read beyond this?") because they
have no explanation for the "Pressure Pulses" right before collapse, but then my second thought was there's probably a logical explanation. Then my
third thought was I have no idea what it would be.....
Link to NIST NCSTAR 1:
wtc.nist.gov...
Link to NIST NCSTAR 1-6:
wtc.nist.gov...