Reply #55: That is a good one.

[Make7]

I don't have any explanation (again), but I do have a couple of observations. When viewing the video, it appears to start small and then increase in speed and size. That's the impression I get anyway - it is difficult to judge from the angle and quality of the video. I bring this up because it seems more consistent with some kind of leak (of what, I don't know) than 'squibs' from explosives - although multiple charges could produce a similar effect. The question that this raises is: if this is an explosive charge that went off prematurely, would it be accompanied by other "misfires"? Or would it be just a single charge. I'm not even sure what the chances of explosives detonating out of sequence would be, but I would imagine it to be extremely small. Although depending on how many charges may have been used, it is possible for more than a few to go off ahead of schedule.

It looks like the 'cloud' from that squib is just visible in this picture:



And it also started before the venting on the mechanical floors indicated by the arrow. Hmmmm....

The "water" coming out the mechanical floor is easier to see in that video I posted. How it falls once it exits the building is what makes me think that it's water. It certainly doesn't look like any kind of dust.

My point being - I think it's possible that building systems in areas not near the collapse may have nevertheless been adversely affected by the collapsing building above. If the systems were controlled electronically, who knows what havoc may have occurred when remote parts of the system were destroyed?

That's odd about there being three mechanical floors at the top of the South Tower. I wonder why it was different.

Sometimes it seems like the more I find out, the less I know.

- Make7